Deleted erroneous word in confirmation page

Removed the word 'with' form the confirmation message when invoice is
empty.
Merge pull request #105 from greathmaster/master

Deleted erroneous word in confirmation page
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev' of https://github.com/strangerstudios/paid-memberships-pro
Added Filter Queries option to Advanced Settings
Merge pull request #119 from messica/master

Added Filter Queries option to Advanced Settings
Readme update. Added "Filter searches and archives?" setting to advanced settings tab. If you had "Show excerpts to non-members?" set to No before, then this will be set to Yes after upgrade. But now you can show excerpts on single post pages while still hiding restricted content from searches and archives.