Merge pull request #157 from jrrideout/death-march

losing it
Merge pull request #158 from jrrideout/death-march

add_metadata partially works!
stubbed out directory struture for pyqi-based commands
working version of summarize_biom_table command
added some usage information, just bc it's handy
oops, previous commit didn't have usage info
updated to return string rather than list
working version of interface
updated header information
added usage example
removing the old version of this script in favor of the pyqi-based version
replace try/except with if/else
updated string formatting - using %r in some cases to handle the fact that counts can be either integers or floats, though the float formatting is a little ugly
updated to more descriptive name
updated based on suggestions from @jrrideout
updated to return list of strings as this is more convenient than a string for other interface types (e.g., HTMLInterface, where we'd probably want to join on '<p>'
removed files that were accidentally added
updated class name
improved doc
improved doc