Merge pull request #348 from cc2qe/master

fixed problem with overreporting single-line variants
add ExAC AF annotations
add new columns for ExAC data
add ExAC annotations
update docs for ExAC
add unit testing for ExAC
Merge pull request #349 from udp3f/master

ExAC allele frequencies added
add changes for latest dbSNP file
update to latest dbSNP(fixes the reported bug); rm unnecessary lines of code
rename dbSNP file to represent timestamp
clinvar causal allele should be text
Merge branch 'master' of github.com:arq5x/gemini
Merge pull request #350 from udp3f/master

Bug fix with latest dbSNP file
Add a Bitdeli badge to README
Merge pull request #351 from bitdeli-chef/master

Add a Bitdeli Badge to README
Merge pull request #353 from cc2qe/master

Cancer variant prioritization
Use correct separator for LOFTEE human_ancestor file. Thanks to @drmjc. chapmanb/bcbio-nextgen#468
get fircons from S3
Merge branch 'master' of github.com:arq5x/gemini
[DOC] update database docs to include SV columns and clinvar allele.