UTIL: Added a utils file with solve_discrete_lyapunov and put in init file.
Changed the code in quad sums to call the util folder solve_discrete_lyapunov code.
TESTS: Adding tests for solve_discrete_lyapunov
minor edit
minor edit
LYAP: Changed the imports to use the doubling alg.
LYAP: Created a file called matrix_eqn and put riccati and lyapunov solvers in it.  Changed other files to reflect this change.
TESTS: Added some basic tests.
TRAVIS: Don't test python 3 yet, statsmodels isn't quite ready to be used in python 3.4.
TRAVIS: It is supposed to be ok for python 3.3, lets see.
TEST: attempt to make test_jv work on py3
TESTS: Skipping jv for python 3.
TESTS: Deleted the extra test_jv.py file.  Should only be in tests_models directory.
TESTS: More tolerance for the law of large numbers tests.
Merge pull request #49 from jstac/build_fix

TRAVIS: Small changes so that tests pass.
Merge branch 'master' of github.com:jstac/quant-econ into lyap
LYAP: Changed the call in evans_sargent.py to use quantecon lyapunov solver.
LYAP: Fixed the tests and corrected calls.
Merge pull request #48 from jstac/lyap

Lyapunov
README: Update link to build status

Had link to build status from old tests branch, updated.