Fixing a few golint issues

CONTRIBUTING.md

@@ -38,8 +38,7 @@ Format your code (the path might be slightly different):
 Run the following commands, and address any issues which arise:
 
 * `go vet github.com/s-rah/go-ricochet/...`
-* `golint github.com/s-rah/go-ricochet`
-* `golint github.com/s-rah/go-ricochet/utils`
+* `/golint application/ channels/ connection/ examples/ identity/ policies/ testing/ utils`
 
 ## 4. Code Review
 

connection/autoconnectionhandler.go

@@ -34,6 +34,7 @@ func (ach *AutoConnectionHandler) OnReady(oc *Connection) {
 func (ach *AutoConnectionHandler) OnClosed(err error) {
 }
 
+// GetSupportedChannelTypes returns a list of channel types that are registered with the handler.
 func (ach *AutoConnectionHandler) GetSupportedChannelTypes() []string {
 	supported := []string{}
 	for k := range ach.handlerMap {

connection/connection.go

@@ -480,12 +480,16 @@ func (rc *Connection) controlPacket(handler Handler, res *Protocol_Data_Control.
 	}
 }
 
+// EnableFeatures sends an EnableFeatures messages which includes the
+// list of `features`
 func (rc *Connection) EnableFeatures(features []string) {
 	messageBuilder := new(utils.MessageBuilder)
 	raw := messageBuilder.EnableFeatures(features)
 	rc.SendRicochetPacket(rc.Conn, 0, raw)
 }
 
+// traceLog is an internal function which only logs messages
+// if the connection is configured to log.
 func (rc *Connection) traceLog(message string) {
 	if rc.trace {
 		log.Printf(message)

connection/outboundconnectionhandler.go

@@ -88,7 +88,3 @@ func (och *OutboundConnectionHandler) ProcessAuthAsClient(identity identity.Iden
 	}
 	return false, utils.ServerRejectedClientConnectionError
 }
-
-func (och *OutboundConnectionHandler) GetSupportChannels() {
-
-}

utils/networking.go

@@ -7,7 +7,10 @@ import (
 )
 
 const (
+        // InvalidPacketLengthError is returned whenever ricochet receives a packet too small or too large to conform to the spec.
 	InvalidPacketLengthError = Error("InvalidPacketLengthError")
+	
+	// InvalidChannelIDError channels must be between 0 and 65535
 	InvalidChannelIDError    = Error("InvalidChannelIDError")
 )