Cluster reroute support (excluding response)
Map cluster reroute response (still missing some bits)
Set CopyToOutputDirectory to Always for reroute json test
Merge branch 'develop' into feature/cluster-reroute

Conflicts:
	src/Nest/Nest.csproj
Fix typos in cluster reroute explanation
Merge branch 'develop' into feature/cluster-reroute

Conflicts:
	src/Nest/Nest.csproj
Cluster reroute API now fully implemented

Closes #496
Merge pull request #1143 from elasticsearch/feature/cluster-reroute

Feature/cluster reroute