docs: available resources for muta (#387)

* docs:  available resources for muta

* docs: docs for related resources

* docs: accurately represent developer resources

Author: homura

README.md

@@ -54,6 +54,10 @@ We provide detailed service development guides and some service examples.
 * [Service Examples](https://nervosnetwork.github.io/muta-docs/#/en-us/service_eg.md)
 * [Develop a DEX Chain](https://nervosnetwork.github.io/muta-docs/#/en-us/dex.md)
 
+## Developer Resources
+
+Developer resources can be found [here](./docs/resources.md)
+
 ## Who is using Muta？
 
 Muta powers some open source projects.

README_CN.md

@@ -53,6 +53,10 @@ Service 是 Muta 框架中用于扩展的抽象层，用户可以基于 Service
 * [Service 开发指南](https://nervosnetwork.github.io/muta-docs/#service_dev.md)
 * [Service 示例](https://nervosnetwork.github.io/muta-docs/#service_eg.md)
 
+## 开发资源
+
+可以在[这边](./docs/resources.md)找到相关的开发资源
+
 ## 谁在使用 Muta？
 
 <p align="left">

docs/resources.md

@@ -0,0 +1,13 @@
+# Resources
+
+## SDK
+
+- [muta-sdk-java](https://dl.bintray.com/lycrushamster/Muta-Java-SDK/org/nervos/muta-sdk-java/1.4/) - The Java SDK
+- [muta-sdk-js](https://www.npmjs.com/package/@mutadev/muta-sdk/v/0.2.0-alpha.1) - The JavaScript SDK
+
+## Others
+
+- [muta-cli](https://github.com/nervosnetwork/muta-cli) - A command-line util for new to Muta
+- [muta-bench](https://github.com/nervosnetwork/muta-benchmark/tree/v0.1.12) - A transfer-based performance test script
+- [hermit-purple](https://github.com/homura/hermit-purple-server) - Cache server for Muta
+