v2.0.0

Changes overview:

• Added 'ignoreFiles' parameter as an array of files to exclude from readme generation
• Removed 'ignorePattern' parameter
• Changed shown info on console in various places
• Changed package version and info in package.json
• Fixed bug related to function overriding in super-builder.js
• Changed contract template to show version parameter (if defined)
• Updated readme.md to reflect changes in usage and new parameters