Do not define $GEM_HOME

Defining it breaks gems for all users who neither use RVM nor rbenv,
but have a different default Ruby version nonetheless.

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Use correct option for pacman search aliases
Stop module loading when external code fails to source
Comment an unnecessary style
adding zaw as an external module
santiycr's theme
submodule updates
replace terminal path with last dir vs absolute
submodule updates
automatically activate virtualenvs
fixing merge conflict