Added mysqlbeat to community beats (#1545)

libbeat/docs/communitybeats.asciidoc

@@ -19,6 +19,7 @@ Logstash or Elasticsearch. Supports all HTTP methods and proxies.
 https://github.com/jasperla/hwsensorsbeat[hwsensorsbeat]:: Reads sensors information from OpenBSD.
 https://github.com/radoondas/jmxproxybeat[jmxproxybeat]:: Reads Tomcat JMX metrics exposed over 'JMX Proxy Servlet' to HTTP.
 https://github.com/eskibars/lmsensorsbeat[lmsensorsbeat]:: Collects data from lm-sensors (such as CPU temperatures, fan speeds, and voltages from i2c and smbus)
+https://github.com/adibendahan/mysqlbeat[mysqlbeat]:: Run any query on MySQL and send results to Elasticsearch.
 https://github.com/PhaedrusTheGreek/nagioscheckbeat[nagioscheckbeat]:: For Nagios checks and performance data.
 https://github.com/mrkschan/nginxbeat[nginxbeat]:: Reads status from Nginx.
 https://github.com/joehillen/packagebeat[packagebeat]:: Collects information about system packages from package
@@ -35,6 +36,7 @@ https://github.com/mrkschan/uwsgibeat[uwsgibeat]:: Reads stats from uWSGI.
 https://github.com/eskibars/wmibeat[wmibeat]:: Uses WMI to grab your favorite, configurable Windows metrics.
 
 
+
 Have you created a Beat that's not listed? If so, add the name and description of your Beat to the source document for     
 https://github.com/elastic/beats/blob/master/libbeat/docs/communitybeats.asciidoc[Community Beats] and https://help.github.com/articles/using-pull-requests[open a pull request] in GitHub to get your change merged. When you're ready, go ahead and https://discuss.elastic.co/c/annoucements[announce] your new Beat in the Elastic
 discussion forum.