Fixed battery status on Apple computers without battery, like iMacs.
README: move the current maintainer up!
Add CHANGES file, with change log for incoming release 1.9
Add .mailmap to workaround contributors that have a broken Git config
.mailmap: stricter matches for Poil
.mailmap: show jaesivsm's nickname
CHANGES: add thanks to contributors for v1.9

git shortlog -n -s v_1.8..develop
Release v1.9
CHANGES: fix typo in contributor name
implementing issue #110

as the activation of GIT_PS1_SHOWUPSTREAM option does for __git_ps1
the _lp_git_branch_color now compute how many commit we are ahead or
behind of our remote reference.