Resolve coverage misleading infos:

Readme github is not showing the real coverage.
Add information about coverage on how-to-contribute
Make CONTRIBUTING.md file more usefull.
Change file location of Contributing so that we profite from github
machinery, reminders to Contribuiting file.

CONTRIBUTING.md

@@ -0,0 +1,27 @@
+# How to contribute to terraform-libvirt-plugin:
+
+## Running the tests (testacc)
+
+```
+make testacc
+```
+
+### code coverage:
+
+Run first the testacc suite.
+
+Then you can visualize the profile in html format:
+
+```golang
+go tool cover -html=profile.cov
+```
+
+Feel free to read more about this on : https://blog.golang.org/cover
+
+### Provider terraform useful devel info:
+
+https://www.terraform.io/docs/plugins/provider.html
+
+### Writing acceptance tests:
+
+Take a look at Terraform's docs about [writing acceptance tests](https://github.com/hashicorp/terraform/blob/master/.github/CONTRIBUTING.md#writing-an-acceptance-test).

README.md

@@ -4,8 +4,7 @@
 - Planning board: [Github Projects](https://github.com/dmacvicar/terraform-provider-libvirt/projects/1)
 
 
-![alpha](https://img.shields.io/badge/stability%3F-beta-yellow.svg) [![Build Status](https://travis-ci.org/dmacvicar/terraform-provider-libvirt.svg?branch=master)](https://travis-ci.org/dmacvicar/terraform-provider-libvirt) [![Coverage Status](https://coveralls.io/repos/github/dmacvicar/terraform-provider-libvirt/badge.svg?branch=master)](https://coveralls.io/github/dmacvicar/terraform-provider-libvirt?branch=master)
-
+![alpha](https://img.shields.io/badge/stability%3F-beta-yellow.svg) [![Build Status](https://travis-ci.org/dmacvicar/terraform-provider-libvirt.svg?branch=master)](https://travis-ci.org/dmacvicar/terraform-provider-libvirt)
 ___
 This is a terraform provider that lets you provision
 servers on a [libvirt](https://libvirt.org/) host via [Terraform](https://terraform.io/).
@@ -15,7 +14,7 @@ servers on a [libvirt](https://libvirt.org/) host via [Terraform](https://terraf
 - [Installing](#installing)
 - [Quickstart](#using-the-provider)
 - [Building from source](#building-from-source)
-- [How to contribute](doc/CONTRIBUTING.md)
+- [How to contribute](CONTRIBUTING.md)
 
 ## Website Docs
 - [Libvirt Provider](website/docs/index.html.markdown)