Expose config options in read operations
Exposes config options in write operations.  Partially addresses #58.
Exposes config options in  metadata_read and file_upload operations.  Closes #58
Adds SSL V3 example
Few more details in readme, such as checking on Linux
Exposes config options to download file function.  Closes #58
Updated 'redcap' package to 'redcapAPI' package.  Related to https://github.com/nutterb/redcapAPI/issues/39.
Merge pull request #59 from OuhscBbmc/dev

expose config_options