Refactoring based on existing add_pool tests.
Merge pull request #119 from jkingsbery/master

Updated rebar to a new version
[#117] Add test for as_json/1
Merge pull request #120 from saa/master

[#117] Add test for as_json/1
stab at #111: refactored add_pool/8, add_pool/9 to use add_pool/2 instead of the other way around; added some tests for type correctness; updated tests that use add_pool/8/9 to use add_pool/2 and deprecated old tests
Merge branch 'master' of github.com:Eonblast/Emysql