Added functions parse_csv_line and read_pandas_df to create list-of-lists data table from a pandas data frame
Fix update datatypes parsing bug
Removed parse_csv_line and reworked read_pandas_pdf to produce a header and rows from either a .pkl file or a pandas DataFrame
Merge pull request #18 from mdec/read-pandas-df

Added functions parse_csv_line and read_pandas_df to data_utils.py to create list-of-list...
Add new test that makes sure all the demo scripts run without errors.
Merge branch 'master' of github.com:mit-probabilistic-computing-project/BayesDB
Add chicago example data
Fix whitespace bug in multinomial values, and add employees example test for it.
Update docs
added with confidence clause to whereclause grammar
can extract confidence and set to float or None
Make plotting work for functions instead of just raw columns.
Fix multinomial plotting order
Fix ordering of multinomial values in mult-mult plots
Fix mult-mult ordering, and hide axes if too many values
fix y reverse
plot colnames
added grammar file
parses whereclause where col=val is the same as where col='val', spaces in val is still require quotest
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