Updated version number and what's new for 1.6.1
Fixed build for PCL unit tests
Updated text template for samples
Fixed samples project to build SDK
Updated entity context files
Binding redirect for Newtonsoft.Json
Fixed typo in sample code

Fixes issue #97
Removed obsolete mobile libraries from build
Added note on samples fix
Assembly version number updates
PCL Assembly info updates for 1.6.1
Removed System.Threading.Tasks.dll
Deleted the old, obsolete SPARQL sample
Merge branch 'release-1.6.1' into develop