HzGraph CurveLine, CurveRegion, CurveCompare add
Merge branch 'master' into feature/HzCurveGraph_JW

Conflicts:
	sample/AndroidManifest.xml
	sample/res/layout/activity_main.xml
	sample/res/values/strings.xml
	sample/src/com/handstudio/android/hzgrapher/MainActivity.java
edit commit error
- merge master graph to curve graph
add curve graph screenshot
Update README.md
Update README.md
Merge branch 'feature/HzCurveGraph_JW'

Conflicts:
	README.md