Merge pull request #103 from chapmanb/master

Fixes for installer + command line version
format floats for output
typo
Merge branch 'master' of github.com:arq5x/gemini
better handling of empty PED fields.
bugfix filter
set defaults for windower options; replace list with collapse
missing braces in print
round off float values for window analysis
new unit tests added for region & windower
fix filter column in unit tests
[ENH] add more relevant columns for de_novo tool.
Merge pull request #104 from udp3f/master

new unit tests added
Renamed test.snpEff.vcf to test.snpeff.vcf.
Refactored load and load_chunk to remove duplication.
Merge pull request #106 from roryk/master

load and load_chunk refactor
default FILTER to None
Fixes for gemini installer: install version of pip for MacOX with easy_install, ensure using called python for virtualenv