Fix links to annotations
Added file exts.
User replacement annotation doc
Merge pull request #18 from Fammy/master

Fix annotation links on net.patter-app.room
Merge pull request #19 from LewisJEllis/userreplacement

User replacement annotation doc
Merge pull request #20 from LewisJEllis/phototag

Phototag doc
Fixed full/basic typo