Merge pull request #278 from teharrison/develop

add shell script for loading memcached on magellan VM
Merge branch 'develop' of git@github.com:MG-RAST/MG-RAST into develop
Merge pull request #279 from teharrison/develop

fixed bug with negative values in predicted rna features
fixed divide by error for some edgae case metagenomes
Merge branch 'develop' of git@github.com:MG-RAST/MG-RAST into develop