Hello,
I am a developer with 3 years of experience in Ruby on Rails. And, I can make your Gem ready on time without any delay with proper Production ready coding standards.
I will also ensure to document the functions with the precise description, which can help you to make a little changes by yourself in the Gem in future. :-)
Though i am new to Freelancing, you can always have a leap of faith on me.
The best thing you could give someone is a chance. Thank you.