Created Apache (markdown)

Apache.md

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+* Enable Mod_Proxy: `sudo a2enmod proxy proxy_http proxy_wstunnel` then restart Apache `service apache2 restart`
+* Configure your virtual host (vhost)
+
+Let say you have the following "mytodo.org" vhost configured in `/etc/apache2/sites-available/mytodo.org.conf`:
+
+```ApacheConf
+<VirtualHost *:80>
+        ServerName mytodo.org
+        ServerAdmin webmaster@mytodo.org
+
+        DocumentRoot /var/www-vhosts/mytodo.org
+        <Directory />
+                Options FollowSymLinks
+                AllowOverride AuthConfig FileInfo Indexes Options=MultiViews
+        </Directory>
+
+        <Directory /var/www-vhosts/mytodo.org>
+                Options -Indexes +FollowSymLinks +MultiViews
+                AllowOverride AuthConfig FileInfo Indexes Options=MultiViews
+                Require all granted
+        </Directory>
+
+        ErrorLog /var/log/apache2/mytodo.org-error.log
+
+        # Possible values include: debug, info, notice, warn, error, crit,
+        # alert, emerg.
+        LogLevel warn
+
+        CustomLog /var/log/apache2/mytodo.org-access.log combined
+        ServerSignature Off
+</VirtualHost>
+```
+
+Add the following lines at the end just before `</VirtualHost>`:
+
+```ApacheConf
+        ProxyPassMatch   "^/(sockjs\/.*\/websocket)$" "ws://127.0.0.1:8081/$1"
+        ProxyPass        "/" "http://127.0.0.1:8081/"
+        ProxyPassReverse "/" "http://127.0.0.1:8081/"
+```
+
+**Note:** if not already done, don't forget to enable your vhost `sudo a2ensite mytodo.org`
+
+Reload Apache `sudo service apache2 reload`
+
+[Apache Mod_Proxy documentation](http://httpd.apache.org/docs/current/mod/mod_proxy.html)