doc/dev/developer_guide.md: update dev guide (#740)

* doc/dev/developer_guide.md: update dev guide

Author: estroz

doc/dev/developer_guide.md

@@ -2,38 +2,58 @@
 
 This document explains how to setup your dev environment.
 
+## Prerequisites
+- [dep][dep_tool] version v0.5.0+
+- [git][git_tool]
+- [go][go_tool] version v1.10+
+
 ## Download Operator SDK
 
-Go to https://github.com/operator-framework/operator-sdk and follow the [fork guide][fork_guide] to fork, clone, and setup the local operator-sdk repository.
+Go to the [Operator SDK repo][repo_sdk] and follow the [fork guide][fork_guide] to fork, clone, and setup the local operator-sdk repository.
 
 ## Vendor dependencies
 
-We use [dep](https://github.com/golang/dep) to manage dependencies.
 Run the following in the project root directory to update the vendored dependencies:
 
 ```sh
 $ cd $GOPATH/src/github.com/operator-framework/operator-sdk
-$ dep ensure 
+$ make dep
 ```
 
 ## Build the Operator SDK CLI
 
-Requirement:
-- Go 1.9+
-
 Build the Operator SDK CLI `operator-sdk` binary:
 
 ```sh
-# TODO: replace this with the ./build script.
-$ go install github.com/operator-framework/operator-sdk/commands/operator-sdk 
+$ make install
 ```
 
 ## Testing
 
 Run unit tests:
 
 ```sh
-TODO: use ./test script
+$ make test/unit
+```
+
+Run all tests:
+
+```sh
+$ make test
 ```
 
-[fork_guide]:https://help.github.com/articles/fork-a-repo/
+**Note:** running all tests requires:
+- [docker][docker_tool] version 17.03+
+- [kubectl][kubectl_tool] version v1.11.0+
+- Access to a kubernetes v.1.11.0+ cluster
+
+See the project [README][sdk_readme] for more details.
+
+[dep_tool]:https://golang.github.io/dep/docs/installation.html
+[git_tool]:https://git-scm.com/downloads
+[go_tool]:https://golang.org/dl/
+[repo_sdk]:https://github.com/operator-framework/operator-sdk
+[fork_guide]:https://help.github.com/articles/fork-a-repo/
+[docker_tool]:https://docs.docker.com/install/
+[kubectl_tool]:https://kubernetes.io/docs/tasks/tools/install-kubectl/
+[sdk_readme]:../../README.md