Merge pull request #4 from Jam10o/master

Changed all print statements to print functions.
Merge pull request #3 from uwecerron/master

Adding readme and installation dependencies file.
adjust code to new test data structure
convert the first trie.Trie test to py.test unit tests
delete pyc files
split tests and refactor code
simplified trie.Trie tests
added RLP tests
added hexarraykey tests
cosmetic change
fix remaining Trie tests
better failure message
cosmetic change
Merge pull request #12 from freizeit/fix-more-trie-tests

fix the Trie tests in runtest.py
Merge pull request #11 from freizeit/proper-tests

Conversion to py.test
Merge upstream