Remove some hardcode.
Merge pull request #5 from peri18/NODEJS-1751

Remove some hardcode.
[NODEJS-1753] ACS Node SDK Rework Integration

- Part of integration
[NODEJS-1753] ACS Node SDK Rework Integration

- Part of integration
[NODEJS-1752] ACS Node SDK Rework Part 3

- Refine framework
- Add test cases for ACLs, Files
[NODEJS-1752] ACS Node SDK Rework Part 3

- Refine framework
- Add test cases for ACLs, Files
[NODEJS-1752] ACS Node SDK Rework Part 3

- Add test cases for Friends
[NODEJS-1753] ACS Node SDK Rework Integration

- Fix a problem of wrong error message