1.0.67 - Tumblr ripper can rip external domains

You have to enter the URL in a weird format, though.

For example, to rip `fiddle.se`, you need to try to rip:

`http://fiddle.se.tumblr.com`

Tags and /post/ rips are still supported
Added Pornhub album ripper
Merge pull request #74 from metaprime/pornhub

Added Pornhub album ripper
Imagevenue ripper #8
Hentai-foundry ripper #8
1.0.68 - version bump for imagevenue & hentaifoundry
Apparently instagram usernames can contain periods
1.0.69 - Gfycat video ripper, instagram username fix

For #8
Removing kinkyshare ripper (defunct site)
Unifying external page requests to a single method
Using new wrapper for HTTP requests, started abstract classes to simplify rippers
Moving from MultiPage ripper to HTML ripper, added JSON ripper
Removed SinglePage ripper
Migrated existing rippers to use more abstraction, 2 new video rippers
Decrease maximum filename length for #77
Download via stream instead of Jsoup for #80
Fix for ehentai ripper
Update README.md
1.0.70 Reddit ripper retrieves gfycat and vidble links

As requested in #8
1.0.71 - Fuskator ripper for #8