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)
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
Version bump to 2.2.2
Regenerate gemspec for version 2.2.2