Merge pull request #33 from wibeasley/master

update after repository was renamed & redirect Travis.

Thanks, @wibeasley.  I'm learning a lot of new things with your help.
Improve description field

CRAN requested a better description of the package.  I felt obligated to comply.
Update DESCRIPTION
Bug fix for meta_data
Update README.md
Update exportMetaData.R
Update exportMetaData.R
Add RCurl check

Avoid the "GnuTLS recv error (-9)" error.  When `redcapAPI` sees this error, it will resort to RCurl to get the meta data
include postForm

import RCurl::postForm to avoid the GnuTLS recv error.
Update DESCRIPTION
Create apiCall

Function to automatically make the decision to use RCurl when the GnuTLS recv error is produced.
Update exportMetaData.R

implements `apiCall`
Update exportRecords.R

implement `apiCall`
Create apiCall.Rd
Update DESCRIPTION

Update version number
Update CITATION
Update CITATION
Rename apiCall to apiCall.R
Update apiCall.R
Update exportMetaData.R