replaced string concat with .append in string builders
removed unused imports
converted member to local var
simplified using lambda expressions and <>
.listFiles might return null
fixed brace placement
added maven-assembly-plugin to assemble executable jar with deps
Merge pull request #4 from janosgyerik/minor-fixes

Minor fixes
added to readme executable jar build steps
Merge pull request #3 from JaDogg/master

Added Netbeans related items to gitignore
Merge pull request #5 from janosgyerik/maven-executable-jar-fix

Maven executable jar fix
Merge pull request #6 from JaDogg/master

FXML (Code Save)
Merge pull request #7 from JaDogg/master

Images
Merge pull request #9 from JaDogg/master

FxmlTools and Launchable
Merge pull request #10 from JaDogg/master

Whitespaces
Cleanup
Merge remote-tracking branch 'upstream/master'