made string_to_tuple private method
added travis build file and changed dir structure
fixed typo
updated travis.yml
added tests
updated .travis.yml
updated travis.yml
updated travis.yml
fixed typo
updated travis.yml
updated travis.yml
changed assertItemsEqual to assertSameElements, assertItemsEqual not available in python3
testing travis
updated travis.yml
updated travis.yml
updated travis.yml
updated travis.yml
corrected test_add_nodes_non_string
Added active_trail feature
added email notications on group email