Moved examples to top-level directory.
Added old AMOEBA alchemy.py script.
Moved driver to driver.py.
Updated driver code.  Lots of hardcoded stuff left in there.
Merged in old ThermodynamicState for convenience, until we replace oldrepex completely.
Removed nonfunctional utils.py
Minor code cleanup.
Roped in old testsystems.py until we replace it wholesale with new repex.testsystems.
Removed accidentally added file.
Moved yank test.
Cleaned up alchemy.py docstrings and code paths, but showing that this version fails fully-interacting alchemical intermediate test.  Investigating.
Added nose test for alchemy.
More updates to alchemy.py
Multiple updates to nose test.
Added test .travis.yml
Updated README with travis-ci badge.
Updated test_alchemy.py with precision argument.
Merge pull request #28 from jchodera/master

Lots of updates to try to get "old" YANK into working shape.  Note that this version still uses `oldrepex`, but the new `testsystems` from the new `repex` module.  Travis-CI testing not fully working yet.