Issue #2: Incorrect behavior on devices with screens not HVGA.
Issue #2: Updated test: testImageLoadingFromAssets()
Refactored image creation logic
Fixed issue with target density of loaded image
Added commentaries, one util method.
Merge pull request #3 from Anatolii/Issue-#2-Incorrect-behavior-on-devices-with-screens-not-HVGA

Issue #2 incorrect behavior on devices with screens not hvga