remove plyr functions from get_dataset
changed slack room to builds in appveyor file
changed slack room to builds in travis file
Fixed `print.download` method so that NULL records don't cause it to choke.
Keyword fixes and authorship change.
*  Added Gavin Simpson to the list of authors, moving him from contributors resolves issue #126
* Changed keywords for `compile_downloads`, `get_publication` and `param_check` to partially address #124.
Merge pull request #138 from SimonGoring/master

Working on the issues list, resolving bugs.
Minor fixes to get_dataset:
*  Added `@imports` calls for the methods that need it.
*  Added, but commented out, tests that involve the API for get_dataset.
Fixes to `get_download`, commented out the API-dependent tests.
- added `@import` indicators for the `get_download` methods.
- pulled the single `download` out of a list and assigned it to a `download` class.
Undid the change to `get_download` for a single site.  Should have tested it first!
Merge pull request #140 from SimonGoring/master

Added more import statements, fixing keywords.
Roxygen code for the download class.
Merge branch 'master' of https://github.com/SimonGoring/neotoma
Merge remote-tracking branch 'upstream/master'
Multiple changes to standardize keywords and imports.
* Changed testthat filename to see if that helps automatically run tests.  It doesn't seem to
* using the `importFrom` tag seems to be causing errors as functions keep importing the same methods.  I need to look into that.
Merge pull request #136 from gavinsimpson/test-import-issue

remove plyr functions from get_dataset
Merge remote-tracking branch 'upstream/master'
Changing some text in get_download.
Changing `@import` statements and standardizing column and list names.  Also added `download_list` objects.
Re-checked and built.
Removed all plyr commands, changed import statements to importFrom, cleaning code.
- `compile_downloads` removed plyr import.
- `compile_taxa`  removed plyr import, added code block to make it work with `do.call`
- `get_contacts` changed keywords
- `get_dataset` added a `download_list` method.
- `get_datasets` changed keywords, fixed import to importFrom
- `get_download` added importFrom, changed keywords, removed plyr dependency
- `get_site` changed keywords
- `get_sites` changed keywords, changed import to importFrom
- get_table` changed keywords
- get_taxa` changed keywords
- `print.download_list` made it prettier by adding a table of site names.
- rebuilt & re-oxygenized.