Minor modifications in doc strings for proper documentation.
Modified docstrings of XBNWriter for proper documentation.
Modified conf.py and index.rst to create better documentation.
very minor fix [fixes #215]
Merge remote-tracking branch 'upstream/dev' into dev
Merge pull request #216 from ankurankan/dev

very minor change
TabularCPD init cleaned with tests
added example to docstring and fixed doc string
fixed test_cpd_init_event_card_not_int
fixed TabularCPD's marginalize get_cpd and normalize
Fixed docs and some methods
fixed TabularCPD's normalize method
fixed get_cpd method of TabularCPD
fixed reduce method of TabularCPD
fixed TabularCPD tests
Merge pull request #217 from ankurankan/uniform_bayes_markov

Cleaned Bayesian model and CPDs
commented out warning
fixed add_cpd and get_cpd
commented out code which needs to be fixed
fixed get_parents of Bayesian Model