git branch documentation improvements

[Andreas Hartmetz <ahartmetz@gmail.com>]

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Hello all,

Today I read the git branch documentation and noticed a few things, mostly 
style and consistency related, that could easily be improved, so I did just 
that.
Please consider merging the attached patch if it looks good, or tell me what 
you don't like about it.
The most significant change is renaming <start-point> (or is it 
<startpoint>...) to <branch-head> because even I as a relative beginner know 
that a branch is defined by its (movable) head, and <start-point> *does* 
actually specify the new branch head if I'm not mistaken.

Cheers,
Andreas Hartmetz

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diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index 1940256..872bb3e 100644
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -11,51 +11,50 @@ SYNOPSIS
 'git branch' [--color[=<when>] | --no-color] [-r | -a]
 	[-v [--abbrev=<length> | --no-abbrev]]
 	[(--merged | --no-merged | --contains) [<commit>]]
-'git branch' [--set-upstream | --track | --no-track] [-l] [-f] <branchname> [<start-point>]
+'git branch' [--set-upstream | --track | --no-track] [-l] [-f] <branchname> [<branch-head>]
 'git branch' (-m | -M) [<oldbranch>] <newbranch>
 'git branch' (-d | -D) [-r] <branchname>...
 
 DESCRIPTION
 -----------
 
-With no arguments, existing branches are listed and the current branch will
-be highlighted with an asterisk.  Option `-r` causes the remote-tracking
-branches to be listed, and option `-a` shows both.
+With no arguments, local branches are listed and the current branch is
+highlighted with an asterisk.  Option `-r` lists remote-tracking
+branches, and option `-a` lists both.
 
-With `--contains`, shows only the branches that contain the named commit
+With `--contains`, show only the branches that contain the named commit
 (in other words, the branches whose tip commits are descendants of the
 named commit).  With `--merged`, only branches merged into the named
 commit (i.e. the branches whose tip commits are reachable from the named
-commit) will be listed.  With `--no-merged` only branches not merged into
-the named commit will be listed.  If the <commit> argument is missing it
-defaults to 'HEAD' (i.e. the tip of the current branch).
+commit) are listed.  With `--no-merged` only branches not merged into
+the named commit are listed.  If the <commit> argument is missing it
+defaults to 'HEAD', the tip of the current branch.
 
-The command's second form creates a new branch head named <branchname>
-which points to the current 'HEAD', or <start-point> if given.
-
-Note that this will create the new branch, but it will not switch the
+The second form of the command creates a new branch head named <branchname>
+which points to the current 'HEAD', or <branch-head> if given.
+Note that this creates the new branch, but does not switch the
 working tree to it; use "git checkout <newbranch>" to switch to the
 new branch.
 
 When a local branch is started off a remote branch, git sets up the
 branch so that 'git pull' will appropriately merge from
 the remote branch. This behavior may be changed via the global
-`branch.autosetupmerge` configuration flag. That setting can be
-overridden by using the `--track` and `--no-track` options.
+`branch.autosetupmerge` configuration flag. You can override the
+flag using the `--track` and `--no-track` options.
 
-With a '-m' or '-M' option, <oldbranch> will be renamed to <newbranch>.
+With the '-m' or '-M' command, <oldbranch> is renamed to <newbranch>.
 If <oldbranch> had a corresponding reflog, it is renamed to match
 <newbranch>, and a reflog entry is created to remember the branch
-renaming. If <newbranch> exists, -M must be used to force the rename
-to happen.
+renaming. If <newbranch> exists, -M can be used to forwe overwriting
+it.
 
-With a `-d` or `-D` option, `<branchname>` will be deleted.  You may
-specify more than one branch for deletion.  If the branch currently
-has a reflog then the reflog will also be deleted.
+With the `-d` or `-D` command, `<branchname>` is deleted.  You may
+specify more than one branch to delete.  If the branch currently
+has a reflog, the reflog is also be deleted.
 
-Use -r together with -d to delete remote-tracking branches. Note, that it
+Use -r together with -d to delete remote-tracking branches. Note that it
 only makes sense to delete remote-tracking branches if they no longer exist
-in the remote repository or if 'git fetch' was configured not to fetch
+in the remote repository, or if 'git fetch' was configured not to fetch
 them again. See also the 'prune' subcommand of linkgit:git-remote[1] for a
 way to clean up all obsolete remote-tracking branches.
 
@@ -79,7 +78,7 @@ OPTIONS
 
 -f::
 --force::
-	Reset <branchname> to <startpoint> if <branchname> exists
+	Reset <branchname> to <branch-head> if <branchname> exists
 	already. Without `-f` 'git branch' refuses to change an existing branch.
 
 -m::
@@ -119,8 +118,8 @@ OPTIONS
 -t::
 --track::
 	When creating a new branch, set up configuration to mark the
-	start-point branch as "upstream" from the new branch. This
-	configuration will tell git to show the relationship between the
+	<branch-head> branch as "upstream" from the new branch. This
+	configuration tells git to show the relationship between the
 	two branches in `git status` and `git branch -v`. Furthermore,
 	it directs `git pull` without arguments to pull from the
 	upstream when the new branch is checked out.
@@ -133,13 +132,13 @@ start-point is either a local or remote branch.
 
 --no-track::
 	Do not set up "upstream" configuration, even if the
-	branch.autosetupmerge configuration variable is true.
+	branch.autosetupmerge configuration flag is true.
 
 --set-upstream::
 	If specified branch does not exist yet or if '--force' has been
 	given, acts exactly like '--track'. Otherwise sets up configuration
 	like '--track' would when creating the branch, except that where
-	branch points to is not changed.
+	<branchname> points to is not changed.
 
 --contains <commit>::
 	Only list branches which contain the specified commit.
@@ -158,7 +157,7 @@ start-point is either a local or remote branch.
 	linkgit:git-check-ref-format[1].  Some of these checks
 	may restrict the characters allowed in a branch name.
 
-<start-point>::
+<branch-head>::
 	The new branch head will point to this commit.  It may be
 	given as a branch name, a commit-id, or a tag.  If this
 	option is omitted, the current HEAD will be used instead.