bumped date and ver to get ready for cran push
added cran comments file for cran push later, and added to rbuildignore
slight update to rate_limit fxn man file
modified pkg level file a bit
added more thorough descrioption in DESC file
fixed docs in enigma_fetch
added tests folder and testthat to suggests, #1
added tests, closes #1
added encrypted enigma api key to travis env variable