make it automatic. needs refactoring

TODO:
*  auth against api first, to provide more appropriate response to user
  * rather than waiting for unexpected behavior from subsequent calls
* refactor this whole thing
* provide some sort of config file
  * specify github hostname
  * store list of image urls into user's memory?
  * provide figit utility command to spit out a config file (yaml)?
    * this is better than providing a template