Enable specification of a default environment by setting the
"environment" property in sbt.properties.
Merge pull request #170 from fmoloney/LibraryDefaultEnvironment

Enable specification of a default environment
Fix some classpath issues. Also add Util methods to compute URL's for
smartcloud sample.
Merge pull request #171 from markewallace/FixClasspathIssues

Fix some classpath issues. Also add Util methods to compute URL's for