Fix odd character issues and GraphQL 0.13

• Fixes #3 Error: Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$
• GraphQL is a peerDependency and 0.13 is allowed as well

Required fields in GraphQL schema

• Preserved required fields in GraphQL schema #76
• Preventing host passing #74

node-request-by-swagger 1.1.0

node-request-by-swagger => 1.1.0

Improvements, bug fixes

• New mapping. Number accords to Float, instead of Integer
• Fixed refs in parameters