Add test.
Turn the input and output encoding parameters public, as charsets are immutable.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/gumi/builders/UrlBuilder.java
	src/test/java/gumi/builders/PublicInterfaceTest.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/gumi/builders/UrlBuilder.java
	src/test/java/gumi/builders/PublicInterfaceTest.java