Add AUTHORS, update install for release builds

.mailmap

@@ -0,0 +1,5 @@
+<gunnar.beutner@netways.de> <gunnar@beutner.name>
+<gunnar.beutner@netways.de> <gunnar@blade9.beutner.name>
+Gunnar Beutner <gunnar.beutner@netways.de> <icinga@net-icinga2.adm.netways.de>
+<michael.friedrich@netways.de> <michael.friedrich@gmail.com>
+<michael.friedrich@netways.de> <Michael.Friedrich@netways.de>

AUTHORS

@@ -0,0 +1,2 @@
+Michael Friedrich <michael.friedrich@netways.de>
+Valentino Gagliardi <valentino.g@servermanaged.it>

README.md

@@ -3,6 +3,7 @@
 ### What is an Ansible role?
 
 Ansible roles are pre-packaged units of automation. Once downloaded, roles can be dropped into Ansible PlayBooks and immediately applied to servers.
+For details checks [doc/about.md](doc/about.md).
 
 ## Documentation
 

doc/installation.md

@@ -0,0 +1,37 @@
+# Installing Icinga 2 Ansible Roles
+
+Put them into your roles directory and refresh the configuration.
+
+## Building Release Tarballs
+
+In order to build a release tarball you should first check out the Git repository
+in a new directory. If you're using an existing check-out you should make sure
+that there are no local modifications:
+
+$ git status
+
+Here's a short check-list for releases:
+
+* Update the .mailmap and AUTHORS files
+    $ git log --use-mailmap | grep ^Author: | cut -f2- -d' ' | sort | uniq > AUTHORS
+* Bump the version.
+* Update the ChangeLog and doc/about.md files.
+* Commit these changes to the "master" branch and create a signed tag (tags/v<VERSION>).
+    $ git commit -v -a -m "Release version <VERSION>"
+    $ git tag -u EE8E0720 -m "Version <VERSION>" v<VERSION>
+    $ git push --tags
+* Merge the "master" branch into the "support/2.0" branch (using --ff-only).
+    $ git checkout support/2.0
+    $ git merge --ff-only master
+    $ git push origin support/2.0
+* Bump the version to "v<NEXT-VERSION>-dev" and commit this change to the "master" branch.
+
+Use "git archive" to build the release tarball:
+
+$ VERSION=2.0.0
+$ git archive --format=tar --prefix=icinga2-ansible-$VERSION/ tags/v$VERSION | gzip >icinga2-ansible-$VERSION.tar.gz
+
+Finally you should verify that the tarball only contains the files it should contain:
+
+$ VERSION=2.0.0
+$ tar ztf icinga2-ansible-$VERSION.tar.gz | less