CVXopt interface implemented
lint
cleaned up example ipython notebook
pep8
Refactored monos, added many features to posys

 - Created a template 'nomials' class for shared features
 - added 'eid' attribute to monomials (it's basically a hash of 'exp')
 - added algebraic simplification to both monomials and posynomials
 - added posynomial-posynomial multiplication
removed old files
removed matrix bits
Fixed small error, thanks to tests
fixed posynomial division
swapping out lambdas
Updated readme to show example usage

also, it now links to the iPython notebook!
more nomials refactoring

 - new equalities (now eid- and c- instead of string-based)
 - cleaner and faster simplify code
 - use of defaultdicts for eid (means that any non-named variables returns
   a 0 instead of an error)
 - removed non-dict interface to making a monomial
small fixes
adding tests for features to come
more vector and constraint tests
switched matrix tests to arrays
changed tests to match dictionary interface
small error
Early matrix/vector support

a reimplemetation of the numpy matrix class, with:
 - slightly different printing
 - convenient element-wise functions
 - overloaded <= for constraint generation
swapping out lambdas