Create a default tmux session only when none defined in tmux.conf

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Support $PYTHONUSERBASE per PEP 370

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
adapt config
adjust git log format
add more aliases
use custom sorin theme
add option for local zshrc via dotfiles
add brew aliases
add git-svn aliases
add alias to remove .DS_Store files
color paths in cyan and remove underline style
adjust more syntax highlighting styles
use sublime text as editor
adjust prompt theme
use textmate as default editor