Added TODOS.md
Added PyCall to dependencies in README
make tests work
Added a test LP program that calls ECOS backend solver
add wrapper code to call ECOS
TODOS
Merge branch 'master' of https://github.com/karanveerm/CVX.jl

Conflicts:
	TODOS.md
Added basic eval to expressions, need to implement specific eval
functions for each atom. Return canonical form for constraints
change canon form to a function
put old code in sep folder to begin cleanup, make basic lp work
clean up code and add directory structure
trying to generalize to more LPs
Basic LPs working
more test cases
add TODOs
Merge branch master with karanveer
minor fixes, addition works for LPs
bug fixes
Removed madeleine's old code. Added support for promoting scalars to
vectors/matrices as needed during addition and multiplication. Changed +
and * atoms to have special cases for constants. Cleaned up some of the
logic involved in promoting size during + and *.
Merge branch 'master' of https://github.com/karanveerm/CVX.jl

Conflicts:
	src/expressions/expressions.jl