Basic documentation added.

README.md

 # alerancid
 
+Quick and dirty hacks to pull configuration and some additional
+information from Omniswitch devices.
+
+* We offer no guarantees that this will work for you.
+
+* Feel free to register issues for this project. We might even do
+  something about them, but unless you also provide a patch, it will
+  probably take some time.
+
+* Feel free to contact us with questions but be patient. We might take
+  a while to respond.
+
+## rancid.types.conf
+
+Configuration that goes in rancid.types.conf to enable these
+scripts. You will probably need to update the paths and may want to
+tweak the names.
+
+## aosrancid
+
+Script we use to pull configs from Omniswitch 6540 switches.
+
+**WARNING**
+
+Be careful running aosrancid against AOS 6 prior to 6.2.7 r05. There
+is an issue that under certain circumstances most readliy triggered by
+frequent ssh connections can cause high CPU on individual switches in
+a stack, resulting in dropped traffic.
+
+## omniswitch8
+
+Script we use to pull configs from Omniswitch 6900 switches.
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