Merge pull request #1 from mattt/master

Updated with master.
Trim the time interval string in case of empty future diectic expression.
Check the length of both diectic expressions before attempting to create a new string.
Remove original trimming attempt.
Merge pull request #30 from Lickability/master

Handle Nil and Empty String Deictic Expressions
Updating project settings
Merge branch 'master' of github.com:mattt/FormatterKit