Initialization.
- strings.xml;
Update LockPatternUtils.patternToSha1() -> convert pattern to string with UTF-8 encoding;
- LockPatternUtils: use default encoding UTF-8 for all string manipulations;
Milestone:
- add LockPatternActivity;
- finish LockPatternActivity;
- fix LockPatternActivity;
- fix LockPatternActivity;
- fix LockPatternActivity;
- fix grammars;
- add LICENSE and NOTICE (according to Apache License v2.0);
- add gadget screenshots.xml;
Release v1.1:
- fix security issue about using SharedPreferences;
Fix NOTICE.
- make sure LockPatternUtils.patternToSha1() returns lower case string;
Release v1.2:
- make sure LockPatternUtils.patternToSha1() returns lower case string;
- remove unused imports;
- remove unused imports;
Release v1.3 alpha:
 - change project name from LockPattern to android-lockpattern  :-D
- use enums for Mode in LockPatternActivity;
- javadocs;