Merge pull request #842 from nspcc-dev/master-3.0-readme

README/docs: add 3.0 notice, update links to relative

README.md

@@ -16,14 +16,21 @@
 
 # Overview
 
-This project aims to be a full port of the original C# [NEO project](https://github.com/neo-project).
+This project aims to be a full port of the original C# [Neo project](https://github.com/neo-project).
 A complete toolkit for the NEO blockchain, including:
 
 - [Consensus node](docs/consensus.md)
-- [RPC node & client](https://github.com/nspcc-dev/neo-go/tree/master/docs/rpc.md)
-- [CLI tool](https://github.com/nspcc-dev/neo-go/blob/master/docs/cli.md)
-- [Smart contract compiler](https://github.com/nspcc-dev/neo-go/blob/master/docs/compiler.md)
-- [NEO virtual machine](https://github.com/nspcc-dev/neo-go/blob/master/docs/vm.md)
+- [RPC node & client](docs/rpc.md)
+- [CLI tool](docs/cli.md)
+- [Smart contract compiler](docs/compiler.md)
+- [NEO virtual machine](docs/vm.md)
+
+This branch (**master**) is under active development now (read: won't work
+out of the box) and aims to be compatible with Neo 3. For the current stable
+version compatible with Neo 2 please refer to the [**master-2.x**
+branch](https://github.com/nspcc-dev/neo-go/tree/master-2.x) and releases
+before 0.80.0 (**0.7X.Y** track). Releases starting from 0.90.0 will contain
+Neo 3 code.
 
 # Getting started
 
@@ -101,7 +108,7 @@ where you can switch on/off and define port. Prometheus is enabled and Pprof is
 # Contributing
 
 Feel free to contribute to this project after reading the
-[contributing guidelines](https://github.com/nspcc-dev/neo-go/blob/master/CONTRIBUTING.md).
+[contributing guidelines](CONTRIBUTING.md).
 
 Before starting to work on a certain topic, create an new issue first,
 describing the feature/topic you are going to implement.
@@ -114,4 +121,4 @@ describing the feature/topic you are going to implement.
 
 # License
 
-- Open-source [MIT](https://github.com/nspcc-dev/neo-go/blob/master/LICENSE.md)
+- Open-source [MIT](LICENSE.md)

docs/cli.md

@@ -166,7 +166,7 @@ INDEX    OPCODE    DESC
 ```
 
 In depth documentation about the **neo-go** compiler and smart contract examples can be found inside 
-the [compiler package](https://github.com/nspcc-dev/neo-go/tree/master/pkg/compiler).
+the [compiler package](pkg/compiler).
 
 ## VM run
 To run VM use

docs/compiler.md

@@ -138,7 +138,7 @@ At the moment this is implemented via RPC call to the remote server.
 
 ## Smart contract examples
 
-Some examples are provided in the [examples directory](https://github.com/nspcc-dev/neo-go/tree/master/examples).
+Some examples are provided in the [examples directory](examples).
 
 ### Check if the invoker of the contract is the owning address