chore(dev-guide): add development guide

[coveralls]

Pull Request Test Coverage Report for Build 900836254

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.4%) to 36.445%

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Files with Coverage Reduction	New Missed Lines	%
pkg/validate/validate.go	4	31.25%
<!--	Total:	4		-->

Totals
Change from base Build 817515443:	0.4%
Covered Lines:	2210
Relevant Lines:	6064

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💛 - Coveralls