Initial revision of an ERCC spike-in QC command.  This needs to be in a pipeline with software results.
A new version of the ERCC spike-in QC that uses existing RNA-seq alignments to a reference and annotation that includes the ERCC transcripts.
Use last_succeeded_build instead of lastest_build
Fixes to compilation issues.  Consistant use of hash_ref instead of dereferencing. Add test case.
Remove R library dependency on optparse.
Updated class browser cache.
Updated `genome` tab completion.
Merge pull request #210 from jasonwalker80/rna_ercc_qc