Fix /bin/sh compatibility issue in install.sh
gitfast: update to upstream v1.8.4

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
catimg plugin
allow to print an image to the stdout using convert
Fixed a dirs bug for catimg
catimg: fix exit without using source
supresses errors from convert whilen converting, as they
are usually just warnings
updated url to latest powerline-patched fonts

clearing up some confusion in issue#1906
corrected branch character

changed ± to 
theme agnoster: remove trailing space

re-implemented expired pull request https://github.com/robbyrussell/oh-my-zsh/pull/1759
Added Yii basic command completion
Avoid evaluating special chars in $LINE on title command (fixes #2234)
Use single quotes also in $LINE definiton
Revert previous commit, escape %
Avoid 'title:parse error' with single quotes in $CMD
Fixes #2182
Much needed PEP8 love. Use spaces, not tabs.
grab last item in list which is the branch instead of relying on position.
Verification of convert inside the function

Depending on when the path is declared this solution would work in any case
add gem build alias
add gem push alias
gem push alias and gem yank alias
Fixed sublime plugin behaviors.

- Fixed subl search path order in Mac because Sublime Text 3 is named
  Sublime Text.app by default instead of Sublime Text 3.app and they are
  mostly likely to be placed in /Applications instead of
  $HOME/Applications.
- Fixed sublime text binary path in Linux. The sublime_text binary
  installed by Ubuntu installer is placed in /opt/sublime_text/sublime_text
  instead of /usr/bin/sublime_text.
- Use zsh's built-in process detach syntax instead of nohup.