Update docs

    - Addresses: #67
    - Add badge for supported Go versions
    - Suggest dep for dependency management

README.md

@@ -3,6 +3,7 @@
 [![Coverage Status](https://img.shields.io/coveralls/github/golang-migrate/migrate/master.svg)](https://coveralls.io/github/golang-migrate/migrate?branch=master)
 [![packagecloud.io](https://img.shields.io/badge/deb-packagecloud.io-844fec.svg)](https://packagecloud.io/golang-migrate/migrate?filter=debs)
 [![Docker Pulls](https://img.shields.io/docker/pulls/migrate/migrate.svg)](https://hub.docker.com/r/migrate/migrate/)
+![Supported Go Versions](https://img.shields.io/badge/Go-1.9%2C%201.10-lightgrey.svg)
 [![GitHub Release](https://img.shields.io/github/release/golang-migrate/migrate.svg)](https://github.com/golang-migrate/migrate/releases)
 
 
@@ -75,9 +76,7 @@ $ docker run -v {{ migration dir }}:/migrations --network host migrate/migrate
 ## Use in your Go project
 
  * API is stable and frozen for this release (v3.x).
- * Package migrate has no external dependencies.
- * Only import the drivers you need.
-   (check [dependency_tree.txt](https://github.com/golang-migrate/migrate/releases) for each driver)
+ * Uses [dep](https://github.com/golang/dep) to manage dependencies
  * To help prevent database corruptions, it supports graceful stops via `GracefulStop chan bool`.
  * Bring your own logger.
  * Uses `io.Reader` streams internally for low memory overhead.

cli/README.md

@@ -9,11 +9,14 @@ $ go get -u -d github.com/golang-migrate/migrate/cli github.com/lib/pq
 $ go build -tags 'postgres' -o /usr/local/bin/migrate github.com/golang-migrate/migrate/cli
 ```
 
-Note: This example builds the cli which will only work with postgres.  In order
+##### Notes:
+1. This example builds the cli which will only work with postgres.  In order
 to build the cli for use with other databases, replace the `postgres` build tag
 with the appropriate database tag(s) for the databases desired.  The tags
 correspond to the names of the sub-packages underneath the
 [`database`](../database) package.
+1. Support for build constraints will be removed in the future: https://github.com/golang-migrate/migrate/issues/60
+1. If possible, use a dependency manager like [dep](https://github.com/golang/dep) instead of `go get`
 
 #### MacOS