DOC: howto upload generated doc to sf.

git-svn-id: https://scikit-learn.svn.sourceforge.net/svnroot/scikit-learn/trunk@646 22fbfee3-77ab-4535-9bad-27d1bd3bc7d8

doc/README

+Upload the generated doc to sourceforge
+---------------------------------------
+
+First of, generate the html documentation::
+
+    make html
+
+This should create a directory _build/html with the documentation in html fornmat.
+
+
+Now can upload the generated html documentation using scp or some other SFTP clients.
+
+    * Project web Hostname: web.sourceforge.net
+    * Path: htdocs/
+    * Username: Combine your SourceForge.net Username with your SourceForge.net project UNIX name using a comma ( "," ) See Example
+    * Password: Your SourceForge.net Password 
+
+An example session might look like the following for Username "jsmith" uploading a file for his project with a UNIX name of "fooproject":
+
+[jsmith@linux ~]$ scp -r _build/html/* jsmith,scikit-learn@web.sourceforge.net:htdocs
+Connecting to web.sourceforge.net...
+The authenticity of host 'web.sourceforge.net (216.34.181.57)' can't be established.
+RSA key fingerprint is 68:b3:26:02:a0:07:e4:78:d4:ec:7f:2f:6a:4d:32:c5.
+Are you sure you want to continue connecting (yes/no)? yes
+Warning: Permanently added 'web.sourceforge.net,216.34.181.57' (RSA) to the list of known hosts.
+jsmith,fooproject@web.sourceforge.net's password:
+barfile                                                                                       100%  241     0.2KB/s   00:01
+
+