Fix compilation issues HashMap.Entry isn't public.

Need to use Map.Entry instead of HashMap.Entry in order for this to
compile.
Merge pull request #2 from kingargyle/fix-HashMap-issue

Fix compilation issues HashMap.Entry isn't public.
Update README.md
Update README.md
git mv src main
git mv main java
git mv AndroidManifest.xml app/src/main/
git mv java app/src/main/
git mv res/ app/src/main/
git rm project.properties
git add androidtv-Leanback.iml
git add app/app.iml
git add app/build.gradle
git add app/proguard-rules.pro
git add build.gradle
git add gradle/wrapper/gradle-wrapper.jar
git add gradle/wrapper/gradle-wrapper.properties
git add settings.gradle
git add gradlew
git add .gitignore
Fix package name.
Merge branch 'master' of https://github.com/cartland/androidtv-Leanback
Fixed background image issue in LeanbackDetailsFragment.java