Update Development section of README

[stockiNail]

README was containing teh develpment section referring gulp, not used anymore.

[coveralls]

Pull Request Test Coverage Report for Build 2670600659

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 72.727%

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Totals
Change from base Build 2085427674:	0.0%
Covered Lines:	24
Relevant Lines:	31

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 2670600659

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 72.727%

---

Totals
Change from base Build 2085427674:	0.0%
Covered Lines:	24
Relevant Lines:	31

---

💛 - Coveralls

[stockiNail]

@benmccann before merging, what about to create a milestone 1.2.0 and add labels to all PRs in order to have a good release note? What do you think?

[benmccann]

I don't have permission to merge or cut releases, so am happy with whatever organizational solution the person in charge of that would like to use :smile:

[stockiNail]

Thank you @kurkle for your approval and apologize in advance for my further question:

Does it make sense to create new milestone (1.2.0) and to set the labels to all PRs?

[kurkle]

Sure. And do the release too.

[stockiNail]

Thank you! I didn't want to push you to do it. I was just curious why there weren't.