Added my personal version of ruby-build to rbenv. Life just got a little bit easier.
Put it in the wrong place.
Updated ignores with my tweaks.
Added a new plugin for rbenv.
Updated ruby-build information.
Merge branch 'develop'

* develop:
  Guard against exported `CDPATH` (fixes #316)
  Suppress shell warnings when hashing is disabled by `set +h`
  Add `rbenv --debug <command>` as a shortcut for setting RBENV_DEBUG=1
  Export PS4 when RBENV_DEBUG is set for more informative debug output
Merge remote-tracking branch 'sstephenson/master'

* sstephenson/master:
  Fix multiple argument completion with zsh
  rbenv(): preserve multiline output of `sh-*` commands
Merge remote branch 'sstephenson/master' into develop

* sstephenson/master:
  replace tab with spaces
  tests for rbenv-init
  Don't duplicate shims in PATH
  fix resolving symlinks in rbenv-hooks
  add hook lookup tests
  use C on Travis for even less overhead
  skip Ruby stuff on Travis
  configure Travis
  tests galore
  error message when rehash fails on non-writable directory
Add 'ruby-build'.
Merge branch 'master' of github.com:sstephenson/rbenv into develop

* 'master' of github.com:sstephenson/rbenv:
  better emulate `ruby -S` behavior in testing
  un-indent shebang for test executables
  simplify iterating through arglist
  saner assertions for multiline output
  improve detection of completion support for commands
  add tests for completions
  test completions for exec
  hack around the hack around bash `echo`
  fix exec fails for invalid version
  add tests for exec
  fix iterating through paths that have spaces in them
Added a gem rehashing plugin to the mix.
Added ctags into rbenv.
Added RBX compability plugin into the mix.
Merge remote-tracking branch 'origin/master'

* origin/master:
  ensure cleaner PATH in test environment
  suggest cloning rbenv via https instead of git://
  bail out early if readlink is not available
  work around bug in git 1.8.2.1 in tests
  test that IFS in hooks is correct
  restore original IFS for hooks
  improve `versions` tests by cd'ing into a clean slate
  add tests for `help` and `rbenv --version`
  add tests for version commands
  undo `assert_output_lines` in tests
  add tests for rehash, whence, which
Merge branch 'feature/updates'

* feature/updates:
  Added RBX compability plugin into the mix.
  Added ctags into rbenv.
  Added a gem rehashing plugin to the mix.