beautify README on github

README.md

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+README
+======
+
+description
+-----------
+
+Interfacetable_v3t (formerly check_interface_table_v3t) is a Nagios(R) addon 
+that allows you to monitor the network interfaces of a node (e.g. router, switch, 
+server) without knowing each interface in detail. Only the hostname (or ip address) 
+and the snmp community string are required. It generates a html page gathering some 
+info on the monitored node and a table of all interfaces/ports and their status.
+
+Interfacetable_v3t (or check_interface_table_v3t.pl, which is the name of the plugin 
+script) comes from:
+* `check_interface_table.pl`: plugin released by ITdesign Software Projects & Consulting. 
+this is the first version of the plugin, extracted from the commercial suite proposed 
+by ITdesign.
+* `check_interface_table_v2.pl`: plugin released by NETWAYS GmbH, it adds the performance 
+data related to bandwidth usage.
+
+This new version, called `Interfacetable_v3t`, provides some enhancements:
+* externalization of the html page design in css stylesheets and js files
+* extended interface inclusion/exclusion system
+* full documentation
+* code review and cleaned, following the nagios plugin development guidelines
+* installer
+* snmp v2c/v3 and 64bits counters support
+* error/discard packet tracking, duplex status tracking
+* and much more ! (see changelogs)
+See the TODO file for coming features.
+
+Support the check of the following node types: Brocade fiberchannel switches, Cisco routers and switches, Linux hosts, Windows hosts, Solaris hosts, Netapp filers
+
+documentation
+-------------
+
+Complete documentation: [html](http://www.tontonitch.com/tiki/tiki-index.php?page=Nagios+plugins+-+interfacetable_v3t+-+documentation) | pdf
+Changelog: [summary](http://www.tontonitch.com/tiki/tiki-index.php?page=interfacetable_v3t+changelog+-+summary) | [details](http://www.tontonitch.com/tiki/tiki-index.php?page=interfacetable_v3t+changelog+-+details)