Implemented and tested headers()

[amihaiemil]

For #18

[coveralls]

Pull Request Test Coverage Report for Build 31

• 14 of 14 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+5.0%) to 8.824%

---

Totals
Change from base Build 27:	5.0%
Covered Lines:	24
Relevant Lines:	272

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 31

• 14 of 14 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+5.0%) to 8.824%

---

Totals
Change from base Build 27:	5.0%
Covered Lines:	24
Relevant Lines:	272

---

💛 - Coveralls

[amihaiemil]

@rultor merge it

[rultor]

@rultor merge it

@amihaiemil OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge it

@amihaiemil Done! FYI, the full log is here (took me 2min)