Parsing

- Implemented Nibbler::getUUID to assist parsing efforts.

src/Nibbler.h

@@ -59,6 +59,7 @@ public:
   bool getNumber (double&);
   bool getLiteral (const std::string&);
   bool getRx (const std::string&, std::string&);
+  bool getUUID (std::string&);
 
   bool skipN (const int quantity = 1);
   bool skip (char);