Using the correct link for the jclouds logo
JCLOUDS-158: Adding blobstore-scala-filesystem to jclouds-examples

Submitted by adisesha
JCLOUDS-158: Adding blobstore-scala-filesystem to the jclouds-examples overview

Also added parameters to make the example more configurable
JCLOUDS-158: Updating blobstore-scala-filesystem example with new parameters
JCLOUDS-158: jclouds version to 1.6.1-incubating, Scala version to 2.10.2

Also minor formatting changes to README and usage message
JCLOUDS-159: Removing async API from blobstore-largeblob

Also updating the jclouds version to 1.6.1-incubating
Remove deprecated methods from Rackspace examples. Make examples more consistent.