docs: Add readme in adapter-utils

Fixes #74

Author: relekang

packages/adapter-utils/readme.md

@@ -0,0 +1,40 @@
+# `micro-analytics-adapter-utils` 🔧
+
+A set of utilities and tests for creating database adapters.
+
+## Installation
+
+Running your own `micro-analytics` is just two tiny commands away:
+
+```
+npm install micro-analytics-adapter-utils
+```
+
+## Usage
+
+Detailed information on the usage of the utilities and tests can be found in [writing adapters guide][]
+
+```js
+const utils = require('micro-analytics-adapter-utils')
+```
+
+#### Tests
+
+There is a complete test suite for adapters in this module. Usage example below, complete lists
+of options is in [writing adapters guide][].
+
+```js
+// adapter.test.js
+const test = require('micro-analytics-adapter-utils/unit-tests')
+
+test({
+ name: 'adapter-name',
+ modulePath: path.resolve(__dirname, './index.js'),
+})
+```
+
+## License
+
+Copyright ©️ 2017 Maximilian Stoiber & Rolf Erik Lekang, licensed under the MIT License. See [`license.md`](./license.md) for more information.
+
+[writing adapters guide]: https://github.com/micro-analytics/micro-analytics-cli/blob/master/docs/writing-adapters.md