changed output of eol_invasive to single dataframe, added get_eolid, modified get_tpsid
Merge branch 'master' of https://github.com/ropensci/taxize_
fixed, i think, eol_* fxns, get_eolid now uses combo of eol_search and eol_pages to get actual taxon ids
fixes to eol_hierarchy to return NA when given NA, classification now with method for eol IDs from get_eolid
added col_search get_colid and classification method for catalogue of life, closes #159
added tp_classification fxn to get a Tropicos taxonomic hierarchy, added  classification.tpsid method
updated citation to our F1000research article
added special mssg fxn to get_* fxns to easily supress console messages, added tests for get_* fxns without tests
added tests for tp_classification and tp_search, and updated test for classification with new methods
moved tests from inst/tests to tests/testthat according to recent change in preferred location of tests
updated news
updated tests that were broken, fixed docs in synonyms fxn to reflect only itis and tropicos db arg options work for now
updated contributing doc, noted github repo name changes in news
updated travis file with secure hipchat token
added travis button to readme