feature(branch_wlh): modify oneData README.md

Author: alldatafounder

CONTRIBUTING.md

@@ -1,7 +1,7 @@
-## Contributing to Spark
+## Contributing to AllData
 
 *Before opening a pull request*, review the 
-[Contributing to AllData guide](https://github.com/apache/spark/blob/master/CONTRIBUTING.md). 
+[Contributing to AllData guide](https://github.com/AllDataDC/alldata/blob/master/CONTRIBUTING.md). 
 It lists steps that are required before creating a PR. In particular, consider:
 
 - Is the change important and ready enough to ask the community to spend time reviewing?

docs/AllData总设概要.png renamed to docs/AllDataOverview.png

@@ -0,0 +1,11 @@
+# ONE DATA FOR ALL DATA PLATFORM 分布式存储引擎
+
+> 数据平台的微服务引擎, 将JAVA应用拆分为粒度小的SpringBoot应用，使用微服务治理
+
+```markdown
+1、AllData涉及很多Java后台的服务
+
+2、引入Github已有的SpringCloud脚手架
+
+3、统一通过OneData项目来纳管粒度足够小的SpringBoot应用
+```

docs/版本演进/全站式AllData产品路线图.png renamed to docs/ReleaseEvolution/AllDataRoadMap.png

@@ -1,6 +1,6 @@
 # DATABASES FOR ALL DATA PLATFORM 分布式存储引擎
 
-数据平台的分布式存储引擎：存算分离譬如Kylin+Parquet 存算一体譬如CK
+> 数据平台的分布式存储引擎：存算分离譬如Kylin+Parquet 存算一体譬如CK
 
 1、cassandra