Update Rss.php

Add Source-Title to Item-Title in RSS-Feed-Output
fixed misspelled variable
Merge pull request #132 from kevinpapst/bugfixes

fixed misspelled variable
Merge pull request #129 from Darkwing1/patch-1

Add Source-Title to Item-Title in RSS-Feed-Output
rss feed title is now: "example item title (source title)"
save the last update time of a source, to be able to update not-up-to-date sources at first
Fix: Tags and Sources in Sidebar not clickable after adding/saving source
Merge pull request #142 from lformella/sequential-update

save the last update time of a source
Fix wrong get last icon sql query
Opening feed search focus the search input field
Scroll blockquotes and pre on overflow (especially good for mobile devices)
fix #143 by removing BOM
Merge pull request #144 from nohn/master

fix #143 by removing BOM
new option for automatically mark items as read
readme update
Add r shortcut to reload the current view.
* new share buttons for email and pocket (thanks a lot to Francis Noel)
* replace share icons with black style icons
Merge pull request #145 from c4software/reload_shortcut

Add r shortcut to reload the current view.
update docs
update readme