Specifying Jira Issuetype in config.yaml (#53)

* Jira integration documentation improved. Added ability to specify what type of issue to create in Jira

* Apparently, Go doesn't like http/https in front of package name in

internal/model/plugin.go

@@ -87,7 +87,10 @@ func GetPlugin(ts TicketSystem) TicketPlugin {
 					}
 					cfgStringed[kS] = v
 				}
-				tp.Configure(cfgStringed)
+				err := tp.Configure(cfgStringed)
+				if( err != nil) {
+					panic(fmt.Sprintf("Configuration error `%s` in project YAML", err))
+				}
 			}
 		})
 	}