remove filess in #1205 add_taxa.rst and per_library_stats.py did not exsist.
fix #1206
fix #1194
Merge pull request #1219 from teravest/issue1194

fix #1194
Merge pull request #1218 from teravest/issue1206

fix #1206
Merge pull request #1217 from teravest/issue1205

remove filess in #1205 add_taxa.rst and per_library_stats.py did not exs...