Update README with installation instructions
Remove timeout
Merge branch 'master' into storage
PlanetItemStorage: add index on feed_url, add methods for getting/deleting by feed
Add storage option to config
Use storage to keep items when configured
Add Simplepie and Twig as dependencies with Composer
Use Twig for templates, PlanetItem no longer inherits from SimplePie_Item

This commit introduces a lot of breaking changes.
Remove unused CSS
Fixes object conversion
Limit article number on homepage
Restore missing info on homepage
Remove useless include
Update theme
Load items from db when available
Fixes admin
Update theme
Remove test file
Fixes db creation
gitignore vendor and composer.lock