bump to 1.9.3-p547
Merge pull request #149 from hone/master

bump to 1.9.3-p547
Added Rubinius 2.2.7.
Added Rubinius 2.2.8 and 2.2.9.
Added JRuby 1.7.13.
Added Rubinius 2.2.10.
Link to the (unofficial) FreeBSD port (closes #153).
Mention that ruby-install contains a list of stable versions (issue #151).
Add an example of installing a recently released version of Ruby.

* Encourage the use of --md5.
* Specify that the MD5 is of the tar.bz2 archive that ruby-install
  downloads.
`echo yes | rvm implode` stopped working, switching to manual removal.
Apparently RVM on travis does not create an rvm group.
Use --install-dir for rbenv integration.

* rbenv expects MRI Rubies to be installed into
  ~/.rbenv/versions/X.Y.Z instead of ruby-X.Y.Z.
Add then commit the files.
add ruby-1.9.2-p330.tar.bz2
Merge pull request #158 from hone/ruby-1.9.2-p330

add ruby-1.9.2-p330.tar.bz2
Add JRuby 1.7.14.
Version bump for new versions/md5s.
Remove duplicate `gem install bundler` logic.
Add a comment.