#62 provide skywalking-application-toolkit and skywalking-toolkit-activation submodule, and log4j 1.x plugin to output TraceId

change doc about userId to username

* 'master' of https://github.com/wu-sheng/sky-walking:
  Update README.md

Webui use register center to find routing server. and use searchClient to search traceId. Waiting for integration test.

Thank @raphw for the review. 

# Conflicts:
#	skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/conf/Constants.java
#	skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/model/Span.java
#	skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/util/ContextGenerator.java

1.set applicationId to applicationCode, userId to username 2. webui compile pass. 3.webui can display.

1.remove webui useless demo.  2. solve webui compile issue. 3. remove old test case, waiting test scenario by docker tech. @ascrutae

new layout

new layout of test scenario badges

add test scenario badges on this version release.

add scenario badges for test

add release and dev badges