Merge pull request #472 from irontoby/patch-2

Update unshelve.md to clarify that a new branch will be created

doc/commands/unshelve.md

@@ -1,5 +1,5 @@
 ## Summary
-Unshelves a TFS shelveset into a Git branch.
+Unshelves a TFS shelveset into a new Git branch.
 
     Usage: git-tfs unshelve -u <shelve-owner-name> <shelve-name> <git-branch-name>
       -h, -H, --help
@@ -17,6 +17,8 @@ Unshelves a TFS shelveset into a Git branch.
 
 ## Examples
 
+Note: These commands will fail if the branch specified by `git-branch-name` already exists locally.
+
 ### Create a branch from a shelveset under the current TFS user
 
 `git tfs unshelve MyShelvesetName MyBranch`