gradle stuff
updated gitignore to deal with new gradle build stuff
removed all of the .idea and .gradle stuff for now
added config files for intellij and gitignore to ignore the useless stuff
adding mark as read feature.

all read posts are grayed out. The data is cached
for two days (that should be sufficient).
Merge pull request #88 from peshkira/feature/mark_as_read

Adding mark as read feature.
Merge pull request #89 from maltzj/gradle-migrate

Added files for a migration to gradle