Enhancement - Record object

- Added Record::Record (const std::string&)
- Added basic unit test for Record, which currently throws.

src/Record.cpp

@@ -42,6 +42,12 @@ Record::Record (const Record& other)
   *this = other;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+Record::Record (const std::string& input)
+{
+  parse (input);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 Record& Record::operator= (const Record& other)
 {