Revert "Non-optional deserialization for primitive types."

This reverts commit 924261a3d5dbc4c9ac2cd805faccfd2cfdb8d7bf.
Merge branch 'dev'

Conflicts:
	JSONHelper/Pod Classes/JSONHelper.swift
	JSONHelperTests/JSONHelperTests.swift
Set version to 1.1.0.
Podspec file.
Updated repo address.
Updated repo address in source file.
Reversed repo name change. Deleted podspec file for now.
Overloading of own operators for deserialization of JSON strings.
Groot test as a json string deserialization test.
Documented JSON string deserialization and incremented version number. closes #4
Updated readme.