instagram plugin using api

Adding Instagram plugin to Slogger.

Advantage over an IFTT rule is that you get:

- Like count
- Who liked your photo
- Comments
- Location, if included (also place name if you used Foursquare)

Timestamps for the post are set as the time the photo was posted, not the time Slogger was run.

Example entry:

![](https://dl.dropboxusercontent.com/s/g05qf971aa4kitq/Screenshot%202014-09-03%2022.44.04.png?dl=0)

I've been using this for about a year now with no issues. The authentication flow is meant to be low effort and opens a local server, which allows the user to then enter their auth key directly in the terminal once they've approved the app.