Merge pull request #2 from ivoba/master

rework
Fixed SlugifyIconvTest
Added config for travis
Removed test does not work consistently
Check for iconv existence only once in constructor, simplify code
Check if the slugified version is really empty and not "0"
Allow passing an alternative default value if the slugified version is empty
Fix indenting
Fix travis config and add 5.5 tests
Merge pull request #5 from Seldaek/fixes

Few improvements/changes
add static create method for quick inlining calls
Merge pull request #6 from nelmio/add-static-create

Add static create method for quick inlining calls
Fixed minor spelling error
Merge pull request #8 from VictorBjelkholm/SpellingFix

Fixed minor spelling error
Merge remote-tracking branch 'upstream/master'