Added BNFParser 1.0 Podspec

BNFParser is a Backus-Naur Form Framework (https://en.wikipedia.org/wiki/Backus%E2%80%93Naur_Form)

The BNFParser Framework offers 3 basic services of general interest to developers:

1. String Tokenization via the BNFTokenizerFactory and BNFToken classes

2. Property Key/Value mapper via PropertyParser

3. Text Parsing/Validation via Grammars