Merge pull request #69 from roryk/master

pythonified the parallel loader
update messages
Merge branch 'master' of github.com:arq5x/gemini
remove path dependency
make sure all chunks are merged.
tweak message.
merge sample_genotype_counts
allow VEP or snpEff
cleanup temp VCF and DB files.
cleanup whitespace - easier to read
use the PED file when loading VCF with multi-cores.
update README to mention multi-core loading
formatting
[DOC] First cut at docs for rtd.org
Disqus and Google Analytics
Formatting cleanup.
[BUG] cheers to @dgaston. annotate passes unicode chroms from DB.  convert to strings for tabix queries.
[TST] unit tests for gemini annotate
Added using iPython to load on different schedulers.

Also parallized the splitting step.
[DOCS] add docs for the annotate tool.