Paths that are not prefixed with a slash passed to the uri_builder are now prefixed.
Fixed code found by failing test due to change in builder.
Fixed bug I introduced during the last fix.
Travis complained about this line.
Merge pull request #51 from glynos/master

Allow a forward slash to be prefixed for paths that don't have them in the builder
Merge branch 'master' into hunter
Fix Visual Studio build