added support for python virtualenv
fix git in a directory containing spaces
Fix a bug in line jump in git directory.
Merge branch 'master' of https://github.com/flepied/liquidprompt into develop
move virtual env function in the path section, move the display from the front to the path section of the prompt, inside brackets, add flepied as an author, update the readme
fix issue #74 by adding an example bashrc
Merge branch 'master' of https://github.com/jorisv/liquidprompt into develop
Merge branch 'fix_git_basename' of https://github.com/dr4Ke/liquidprompt into develop

Conflicts:
	liquidprompt
don't process VCS function if root

they do not appear in the result anyway, and they can be quite slow
LP_ENABLE_VCS_ROOT to enable use of VCS features with root
LP_PS1_PREFIX used to add arbitrary prompt before anything else
added a CUSTOMIZING THE PROMPT section
Merge branch 'ps1-prefix' of https://github.com/dr4Ke/liquidprompt into develop
Default prefix put a classical prompt as title

Update the doc and themes accordingly
git: fix variable leaks
_lp_git_branch: faster (less external programs calls)