Fix some doc and comments

Add riemann to the index, otherwise it doesn't exist.

README.rst

@@ -295,7 +295,7 @@ Gateway to other services
 =========================
 
 Glances can export stats to: ``CSV`` file, ``InfluxDB``, ``OpenTSDB``,
-``StatsD``, ``RabbitMQ`` and  ``Riemann`` server.
+``StatsD``, ``ElasticSearch``, ``RabbitMQ`` and  ``Riemann`` server.
 
 How to contribute ?
 ===================

conf/glances.conf

@@ -218,14 +218,14 @@ port=4242
 #tags=foo:bar,spam:eggs
 
 [statsd]
-# Configuration file the --export-statsd option
+# Configuration for the --export-statsd option
 # https://github.com/etsy/statsd
 host=localhost
 port=8125
 #prefix=glances
 
 [elasticsearch]
-# Configuration file the --export-elasticsearch option
+# Configuration for the --export-elasticsearch option
 # Data are available via the ES Restful API. ex: URL/<index>/cpu/system
 # https://www.elastic.co
 host=localhost
@@ -233,7 +233,7 @@ port=9200
 index=glances
 
 [riemann]
-# Configuration file for the --export-riemann option
+# Configuration for the --export-riemann option
 # http://riemann.io
 host=localhost
 port=5555

docs/aoa/folders.rst

@@ -8,7 +8,8 @@ monitor size of a predefined folders list.
 
 .. image:: ../_static/folders.png
 
-If the size can not be computed, a '?' (non existing folder) or a '!' (read right error) is displayed.
+If the size cannot be computed, a ``'?'`` (non-existing folder) or a
+``'!'`` (permission denied) is displayed.
 
 Each item is defined by:
 

docs/gw/index.rst

@@ -15,3 +15,4 @@ to providing stats to multiple services.
    statsd
    rabbitmq
    elastic
+   riemann

docs/gw/riemann.rst

@@ -1,10 +1,10 @@
 .. _riemann:
 
 Riemann
-========
+=======
 
-You can export statistics to an ``Riemann`` server (using TCP protocol). The
-connection should be defined in the Glances configuration file as
+You can export statistics to a ``Riemann`` server (using TCP protocol).
+The connection should be defined in the Glances configuration file as
 following:
 
 .. code-block:: ini

glances/exports/glances_riemann.py

@@ -27,7 +27,7 @@ from glances.compat import NoOptionError, NoSectionError, range
 from glances.logger import logger
 from glances.exports.glances_export import GlancesExport
 
-# Import pika for Riemann
+# Import bernhard for Riemann
 import bernhard
 
 
@@ -39,7 +39,7 @@ class Export(GlancesExport):
         """Init the Riemann export IF."""
         super(Export, self).__init__(config=config, args=args)
 
-        # Load the rabbitMQ configuration file
+        # Load the Riemann configuration
         self.riemann_host = None
         self.riemann_port = None
         self.hostname = socket.gethostname()
@@ -47,7 +47,7 @@ class Export(GlancesExport):
         if not self.export_enable:
             sys.exit(2)
 
-        # Init the rabbitmq client
+        # Init the Riemann client
         self.client = self.init()
 
     def load_conf(self, section="riemann"):
@@ -89,4 +89,4 @@ class Export(GlancesExport):
                 try:
                     self.client.send(data)
                 except Exception as e:
-                    logger.error("Can not export stats to Riemann (%s)" % e)
+                    logger.error("Cannot export stats to Riemann (%s)" % e)