Explicitly require rubygems

Not every Ruby installation is setup to load rubygems automatically, so it is a good idea to require it before requiring svn2git gem.
Merge pull request #141 from TiagoTT/patch-1

Explicitly require rubygems
Fixed typos in README.
Merge pull request #150 from jasonmccreary/patch-1

Fixed typos in README.
Update README.markdown
Merge pull request #152 from stefansundin/master

Fix bug in getting authors from svn repo
Rebase a specified branch with --rebasebranch BRANCHNAME
rake/gempackagetask is deprecated, use rubygems/package_task
Fixes problems with untrusted certificate and password protected repositories
Remove --local option from git-config call

Remove --local option from git-config call to prevent a break on  Debian Squeeze systems where --local is not yet available.
Fixed 'git config --local' to work on git versions < 1.7.4.
Preparing the 2.2.3 release.
Regenerate gemspec for version 2.2.3
Version bump to 2.2.4
Preparing the 2.2.4 release.
Regenerate gemspec for version 2.2.4
Removed a file I accidentally added about 4 years ago.
Fixed 'jeweler' installation instructions.
Updated gemspec to remove blah.rb.
Fixed project homepage.