* Add custom license header style in order to comply with Google's Checkstyle format
* Update license headers to comply with Google's Checkstyle format
* 'master' of https://github.com/iluwatar/java-design-patterns: (27 commits)
Remove use of coveralls-maven-plugin (sonarqube.com covers this)
Add SonarQube.com badge
Fix environment variable
Add Travis instructions for SonarQube.com analysis
Adds more criticism to Singleton pattern.
Event Based Asynchronous pattern: Add missing license header and puml diagram
Changed config to non-interactive
Moved config into a separate dir
Unused import removed.
End process logic clause has been corrected.
Caching pattern: Documentation and diagram
Fixes#437. Adds criticism to Singleton pattern.
Alter JUnit tests to run in lesser time.
Updated version snapshot to 1.14.0
Changes based on review feedback.
Closes#436. Adds criticism to service locator pattern.
Caching pattern: Implementation of Cache-Aside pattern
Caching pattern: Style fix for null check
Caching pattern: Refactor LRU cache to avoid NPE and unnecessary cache lookup
Caching pattern: Refactor shutdown hook to use method reference
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