Added Count Builder.
Added Query Dsl Tests
Fixed test class name.
Fixed test class name.
Re-enabled all paths in Sample.
Fixed comment reference in CountBuilder Query method
Rename QueryBase.RegisterJsonPart method  variables to provide cleaner intent expression.
Remove SearchType param from CountCommandBuilder since this parameter doesn't supported by ES.
Added DeleteByQuery command builder.
Add Build and BuildBeautified extension methods to all query builders, so that it's possible to build single queries.
Substitute QueryDsl and CountBuilder by SingleQueryBuilder so it could be used as a query registry to construct single queries accepted by Count and DeleteByQuerey commands.
Merge branch 'pr/n41_gondar'
Merge branch 'master' of github.com:Yegoroff/PlainElastic.Net