minor markup changes in README.markdown
Tags are not correctly updated with "svn2git --rebase" command.

Tags need to be fixed only after branches when using "svn2git --rebase". Otherwise tags are not yet fetched when attempting to fix them, resulting in tags not appearing as they should in git repository (they would only appear after a second  "svn2git --rebase").
Updated authors command:
  Added -q option so that only the authors are shown in the output.
  Added url example so that users are pulled from entire history
Update lib/svn2git/migration.rb, strips leading hyphens from tag names

E.G.: svn/tags/--tagname becomes tagname (in stead of --tagname)
Use double quotes in log commands for fix_tag, as the single quotes cause ambiguous param error.
Pass double quotes around params on command line, not single, as the tag command doesn't like it.
Fix up single quote escaping to remove excessive single quotes
Remove single quote enclosures from git log return values before passing them back in.
Explicitly set/unset GIT_COMMITTER_DATE rather than pass as leading command for windows compatibility.
Fixes the problem with repositories with a white space in name. Yes, exists someone in the world who did that.
Note the release date of 2.2.1.
Merge pull request #83 from edsonlima/master

Fixes the problem with repositories with a white space in name.
Merge pull request #75 from Rud5G/master

Error: command failed: GIT_COMMITTER_DATE
Merge pull request #70 from bwolfe/master

Updated example authors command
Use consistent quoting.
Merge branch 'master' of github.com:nirvdrum/svn2git
Merge branch 'master' of git://github.com/CyberTech/svn2git

Conflicts:
	lib/svn2git/migration.rb
Merge pull request #57 from ruderphilipp/patch-1

minor markup changes in README.markdown
Merge pull request #58 from PowerKiKi/master

Tags are not correctly updated with "svn2git --rebase" command.
Show how to fetch author list for both local and remote repositories.
Updated the changelog for the 2.2.2 release.
Merge branch 'master' of github.com:nirvdrum/svn2git
Regenerate gemspec for version 2.2.1