Merge pull request #108 from EDiLD/fix_quick

removed dependency on NCBI2R
added fxn get_genes (fetches sequence data by genbank ID number), edited get_genes_avail
added back tnrs (taxonomic name resolution service) API methods
base URL just changed for the tnrs service
updated readme
added while loop to tnrs fxn so that repeated calls are made to grab data so that a Sys.sleep call is avoided
added NCBI2R in desc file
added remainder of tests, updated NEWS file
Merge pull request #109 from ropensci/master

merging master to release
removed all fresh_* functions from this release
Merge pull request #110 from EDiLD/release

removed all fresh_* functions from this release
fixed some tests, edited itis functions, ready for submission to CRAN
fixed conflicts in namespace
fixed description and namespace
removed old commented out code from fxn tnrs
Merge pull request #111 from ropensci/release

merging release to master branch, after submission to CRAN of v.0.0.3
added fresh* traits back
removed ubio_namebank test, caused errors on CRAN tests, modified tnrs function
updated tnrs function with more examples
little fix to tnrs fxn for GET method, doesn't accept any parameters