relative pointing (#1879)

readme modify
start.sh and nom-build-all refactoring
change travis conf
update version of zone.js (fixes console error)
karma conf remove dist
add alias build
override tsconfig components build

appveyor.yml

@@ -23,7 +23,12 @@ install:
               else
                 (cd scripts && sh npm-build-all.sh -t -gitjsapi development|| exit 1)
     )
-  - if %COMPONENT_NAME% EQU ng2-demo-shell (cd demo-shell-ng2 && npm install && npm run test || exit 1)
+  - if %COMPONENT_NAME% EQU g2-demo-shell (
+              if %APPVEYOR_REPO_BRANCH EQU master
+                (cd scripts && sh start.sh -t -ss || exit 1)
+              else
+                (cd scripts && sh start.sh -d -t -ss -gitjsapi development|| exit 1)
+    )
 
 # Don't actually build.
 build: off