* Modify PackageTags

* Init commit

* Remove proto files reference

* Migrating some classes from Java

* Init DistributedTraceId

* Fix proto link

* Update .gitignore

* Init CarrierItem

* Refactor

* Init CarrierItem

* Init SkyWalking.NetworkProtocol.Trace

* Init ISpan

* Update project reference

* Init ContextSnaphot,TreacSegmentRef

* Add apache linence

* Refactor IContextCarrier

* Init AbstractTracingSpan

* Init AbstractTracingSpan

* Init traces

* Update appveyor.yml