ECMA 6 - Test new Built in methods for JS

[emravera]

Generate a new test suite for intrinsic JS methods. Please review each one of the links to generate the suite and the corresponding results.

Tests:

• http://es6-features.org/#ObjectPropertyAssignment
• http://es6-features.org/#ArrayElementFinding
• http://es6-features.org/#StringRepeating
• http://es6-features.org/#StringSearching
• http://es6-features.org/#NumberTypeChecking
• http://es6-features.org/#NumberSafetyChecking
• http://es6-features.org/#NumberComparison
• http://es6-features.org/#NumberTruncation
• http://es6-features.org/#NumberSignDetermination

This features can be tested under the same suite.