Add better documentation for deploying for dev

Adds more information on deploying an nginx-ingress controller
for development. Adds info to the minikube section of
deployments which is commonly used for local development.

docs/development.md

@@ -123,4 +123,3 @@ cherry-picked into a release branch.
 * If you're not confident about the stability of the code,
 [tag](https://help.github.com/articles/working-with-tags/) it as alpha or beta.
 Typically, a release branch should have stable code.
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