fixes #26: Enumerations should be unique by their string representation
also updated tests to contain this check and renamed test class EnumWithoutDefaultValue to EnumBasic plus added more numbers (now 0-9)
better comment, fixed typo
using strict comparison
consistency
updated README example and noted that FLOAT is a valid constant name
fiyed typo
Merge pull request #29 from marc-mabe/hotfix/strict_comparison

implemented strict comparison, fixes #28