update test
Add proguard sample
Add image for dumping heap and inspect leaks
Add image for preference sample
Add image for preference category
Add image for preference subscreen
Add DI Sample
Fix jar reference
Add image for preference intent
Add report file for 3.1
Add debug practice
Add app structure top level views image
Add category views image
commit
Merge remote-tracking branch 'mixi/master'
Merge remote-tracking branch 'mixi/master' into takaya
Merge branch 'master' into takaya

Conflicts:
	practice/fundamentals/7th/SharedPreferencesPractice1/.classpath
	practice/fundamentals/9th/NetworkPractice1/.classpath
	practice/fundamentals/9th/NetworkPractice2/.classpath
	projects/fundamentals/8th/AsyncTaskSample/.classpath
	projects/fundamentals/8th/LoaderSample/.classpath
	projects/fundamentals/8th/ServiceSample/.classpath