Create API: Resource name without leading '/' fails

[EricWittmann]

The following exception happens:

io.apicurio.hub.api.exceptions.ServerError: Unexpected server error
	at io.apicurio.hub.api.rest.impl.DesignsResource.createDesign(DesignsResource.java:184)
	at io.apicurio.hub.api.rest.impl.DesignsResource$Proxy$_$$_WeldClientProxy.createDesign(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139)
	at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
	at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
	at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:236)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:402)
	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:209)
	at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
Caused by: io.apicurio.hub.api.exceptions.NotFoundException
	at io.apicurio.hub.api.connectors.SourceConnectorFactory.createConnector(SourceConnectorFactory.java:64)
	at io.apicurio.hub.api.connectors.SourceConnectorFactory$Proxy$_$$_WeldClientProxy.createConnector(Unknown Source)
	at io.apicurio.hub.api.rest.impl.DesignsResource.createDesign(DesignsResource.java:151)
	... 68 more