BUG: adjust to_latex column format when no index

`to_latex` was adding an extra alignment to `column_format` when the
`index` argument was False
DOC: explain travis-ci in CONTRIBUTING.md for the non-cognisanti
DOC: explain travis-ci in CONTRIBUTING.md for the non-cognisanti
ENH: Adding '.' as an na_value for FRED.
Adding some tests to cover the FRED data fetching code.

This a very minimal, but it wasn't previously covered.
I've added a new to contain the tests and more or less copied code
from the test_yahoo file.
ENH: Better error message if a bad series name is passed to the
get_data_fred function.
DOC: Updated RELEASE.rst with change notes.
Merge pull request #3469 from TomAugspurger/fred_na

ENH: Adding '.' as an na_value for FRED.
Merge pull request #3467 from kyleam/tolatex-index

BUG: adjust to_latex column format when no index
DOC: tweak indexing.rst
initial commit of new html module

no need to support bs3

cleanup

refactor some functions and remove useless arguments from user facing API

rename parser to flavor

some commentary

use unicode
provide the correct error message when more than one table is detected

cleanup

clean up and add commentary

we only care if a skiprows object is a container
provide a more useful error message when no matching text is found

flesh out tests

whoops syntax error
add data sets
refactor tests and add more tests

add more index inference code

more interface hacking

use pure lxml

rename and pass parsed rows to frame builder

add some more documentation

passing all tests right now
merge travis deps from read-html
move skiprows to first part of function to follow read_csv API

rename more appropriately
merge setup.py from read-html

conform params to read_csv conventions
add install note about lxml and bs4

testing

clean up commentary
do not export parser classes