Removed rake because we're not using it, added aruba and cucumber because living docs for the Cli is cool
Removed rake because we're not using it, added aruba and cucumber because living docs for the Cli is cool

chemistrykit/chemistrykit,ChemTics/chemistrykit,ChemTics/chemistrykit,animoto/chemistrykit,animoto/chemistrykit,chemistrykit/chemistrykit