Merge pull request #12 from samvit/hash-add

Added add functionality to hash-map
Generate build file with hash's add method
Replace get method with direct key access

- Instead of cortex.get(key) it's now cortex[key]
- Set data key to cortex wrapper
- Append all private methods and attributes with "__" to avoid collision
Merge pull request #14 from mquan/no-string-api

Replace get method with direct key access
Fix README example
Merge branch 'master' of https://github.com/mquan/cortex