look for both git.cmd and git.exe on windows. Might help #14.
oops, rebuild versioneer.py too
travis-ci no longer handles py2.5, so stop testing it
oops, "GITS" != "GITs"
add some quick install instructions, with URL of versioneer.py
stop claiming py2.5 compatibility, since it is no longer tested
Not meant to be run, for importing only: remove #!
Merge pull request #16 from mr-c/patch-1

remove unnecessary shbang from versioneer.py

This file is for importing, not executing, so the `#!/usr/bin/python` was just confusing.
docs: fix minor typo
update docstring to better reflect current reality
README: convert to markdown
README: minor formatting fixes
move instructions to README, and copy README into versioneer.py

Now the docs live in just a single source file.
README: fix list formatting
add installer named "versioneerer"
update README to include new installer
README: minor formatting fixes
README: fix sample code blocks
rename versioneerer to "versioneer-installer"
remove pre-generated versioneer.py, build in setup.py instead

Normally ("setup.py build") we only create versioneer.py in memory, then
embed it into bin/versioneer-installer. If you want a standalone
copy (for testing or debugging), you can use the new "setup.py
make_versioneer" command, which will dump a copy in the current
directory.

This also updates the .travis.yml file to make_versioneer before running
test/test_git.py, since that test assumes it can find a copy of
versioneer.py in the top directory.