Update CONTRIBUTING with current information and stop ignoring *.md files. (#940)

Author: matthewdale

.gitignore

@@ -11,4 +11,3 @@ driver-test-data.tar.gz
 perf
 **mongocryptd.pid
 *.test
-**.md

CONTRIBUTING.md

@@ -1,36 +1,30 @@
 # Contributing to the MongoDB Go Driver
 
-Thank you for your interest in contributing to the MongoDB Go driver.
+Thank you for your interest in contributing to the MongoDB Go Driver!
 
-We are building this software together and strongly encourage contributions from the community that are within the guidelines set forth
-below.
+We are building this software together and strongly encourage contributions from the community that are within the guidelines set forth below.
 
 ## Bug Fixes and New Features
 
-Before starting to write code, look for existing [tickets](https://jira.mongodb.org/browse/GODRIVER) or
-[create one](https://jira.mongodb.org/secure/CreateIssue!default.jspa) for your bug, issue, or feature request. This helps the community
-avoid working on something that might not be of interest or which has already been addressed.
+Before starting to write code, look for existing [tickets](https://jira.mongodb.org/browse/GODRIVER) or [create one](https://jira.mongodb.org/secure/CreateIssue!default.jspa) for your bug, issue, or feature request. This helps the community avoid working on something that might not be of interest or which has already been addressed.
 
 ## Pull Requests & Patches
 
-The Go Driver team is experimenting with GerritHub for contributions. GerritHub uses GitHub for authentication and uses a patch based
-workflow. Since GerritHub supports importing of Pull Requests we will also accept Pull Requests, but Code Review will be done in
-GerritHub.
+The Go Driver team uses GitHub to manage and review all code changes. Patches should generally be made against the master (default) branch and include relevant tests, if
+applicable.
 
-Patches should generally be made against the master (default) branch and include relevant tests, if applicable.
+Code should compile and tests should pass under all Go versions which the driver currently supports. Currently the Go Driver supports a minimum version of Go 1.10 and requires Go 1.16 for development. Please run the following Make targets to validate your changes:
+- `make fmt`
+- `make lint` (requires [golangci-lint](https://github.com/golangci/golangci-lint) and [lll](https://github.com/walle/lll) to be installed and available in the `PATH`)
+- `make test`
+- `make test-race`
 
-Code should compile and tests should pass under all go versions which the driver currently supports.  Currently the driver
-supports a minimum version of go 1.7. Please ensure the following tools have been run on the code: gofmt, golint, errcheck,
-go test (with coverage and with the race detector), and go vet. For convenience, you can run 'make' to run all these tools.
-**By default, running the tests requires that you have a mongod server running on localhost, listening on the default port.**
-At minimum, please test against the latest release version of the MongoDB server.
+**Running the tests requires that you have a `mongod` server running on localhost, listening on the default port (27017). At minimum, please test against the latest release version of the MongoDB server.**
 
 If any tests do not pass, or relevant tests are not included, the patch will not be considered.
 
-If you are working on a bug or feature listed in Jira, please include the ticket number prefixed with GODRIVER in the commit,
-e.g. GODRIVER-123. For the patch commit message itself, please follow the [How to Write a Git Commit Message](https://chris.beams.io/posts/git-commit/) guide.
+If you are working on a bug or feature listed in Jira, please include the ticket number prefixed with GODRIVER in the commit message and GitHub pull request title, (e.g. GODRIVER-123). For the patch commit message itself, please follow the [How to Write a Git Commit Message](https://chris.beams.io/posts/git-commit/) guide.
 
 ## Talk To Us
 
-If you want to work on the driver, write documentation, or have questions/complaints, please reach out to use either via [MongoDB Community Forums](https://community.mongodb.com/tags/c/drivers-odms-connectors/7/go-driver) or by creating a Question
-issue at (https://jira.mongodb.org/secure/CreateIssue!default.jspa).
+If you want to work on the driver, write documentation, or have questions/complaints, please reach out to us either via [MongoDB Community Forums](https://community.mongodb.com/tags/c/drivers-odms-connectors/7/go-driver) or by creating a Question issue in [Jira](https://jira.mongodb.org/secure/CreateIssue!default.jspa).