new metamethod __len,__pairs,__ipairs in lua 5.2
supplement unit test for __len, __pairs, __ipairs
attempt to make travis really work with lua + 5.2+ jit
skip 5.2 tests on 5.1 mode
another .travis.yml
another .travis.yml
another attempt at making travis work
travis-ci now working with lua 5.1 and 5.2. Attempting to fix luajit
mention license in the README.md