Loaded contacts from file and displayed in page

- Added header line in data.txt file (note this file shouldn't contain
empty line for now)
- Added parser.js that parses the raw text read from file
- Implemented loadContacts(file) method to display contacts in table
- Updated index.html
Update parser.js

removed unnecessary comment
Merge pull request #5 from nodirshoh/contributor

Loaded contacts from file and displayed in page