brentp/vcfanno:

This contains minor usability fixes. 0314e53 - (HEAD -> master, origin/master, origin/HEAD) add vcfanno version to header (#140) c4c0ae9 - update travis 49ef500 - non-zero exit when no args are given 6e5a12a - fix help which still mentioned js. 9f857a9 - handle missing value in postannotation. closes #116 1d140d4 - Misleading Flatten error message (#119) 8ffa89c - fix example table format of markdown (#115