docs(example) add initial readme

example/README.md

+This is a simple example to explain how to used the GLPI API Library
+
+Please add this script on Gradle app and Sync the project:
+
+```
+repositories {
+    maven {
+        url 'https://bintray.com/glpi-project/maven-repository'
+    }
+}
+```
+
+```
+compile 'org.glpi:api:0.1.0'@aar
+```
+
+Now you can run your app in simulator or device then to check the log in terminal type this:
+
+```
+adb shell logcat | grep -E "org.glpi.api"
+```
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