nicer gemspec + install tasks
Merge pull request #11 from grosser/gemspec

nicer gemspec + install tasks
option parsin, --help / --version / --sha + file:line support

fixes #7
better processing of relative paths
Merge remote-tracking branch 'grosser/option-parsing'

Conflicts:
	git_spelunk.gemspec
remove file remains + quit text
update posix-spawn
allocate at least 6 lines for repo-status, fixes #13
Merge pull request #15 from grosser/quit

remove file remains + quit text
^C exits, fixes #8
v0.2.3