Fix #1: Add README, SBT build definition, folders
Merge pull request #2 from soc/issue-001

Add README, SBT build definition, folders
Fix repository name in README.md
Ignore subdirectories specific to IntelliJ IDEA
Merge pull request #6 from jspam/002-ignore-dotidea

Ignore subdirectories specific to IntelliJ IDEA
Add token definitions
Merge pull request #4 from TehMillhouse/master

Add token definitions
Remove token classes for Java operators that are not miniJava operators.

Create a token class UnusedFeature for both UnusedOperator and
UnusedKeyword.
Merge pull request #8 from jspam/004-unused-operators

Remove token classes for Java operators that are not miniJava operators.
Merge pull request #5 from jspam/001-readme-fix

Fix repository name in README.md
Add lexer stub and test for lexing the empty string.
Merge pull request #7 from jspam/003-lexer-test-stub

Add lexer stub and test for lexing the empty string.