fixed bug in multi_ec2.py where it was only allowing relatively path'd providers if you ran multi_ec2.py from the inventory directory.
Updated with more tests
Merge pull request #43 from twiest/pr

fixed bug in multi_ec2.py where it was only allowing relatively path'd providers if you ran multi_ec2.py from the inventory directory.
Merge branch 'master' into add_multi_tests
Merge pull request #44 from kwoodson/add_multi_tests

Add multi tests