add comments to redux methods

src/redux/messages.js

@@ -112,6 +112,10 @@ module.exports.setStatus = function (type, status){
     };
 };
 
+/**
+ * Sends a request to mark one's unread messages count as cleared.
+ * @return {null} returns nothing
+ */
 module.exports.clearMessageCount = function () {
     return function (dispatch) {
         dispatch(module.exports.setStatus('CLEAR_STATUS', module.exports.Status.FETCHING));
@@ -136,6 +140,14 @@ module.exports.clearMessageCount = function () {
     };
 };
 
+/**
+ * Marks an admin message as read, dismissing it from the page
+ * @param  {string}   messageType   type of message to delete (invite or notification)
+ * @param  {number}   messageId     id of the message to delete
+ * @param  {number}   messageCount  current number of unread notifications
+ * @param  {object[]} adminMessages current list of admin messages retrieved
+ * @return {null}                   returns nothing
+ */
 module.exports.clearAdminMessage = function (messageType, messageId, messageCount, adminMessages) {
     return function (dispatch) {
         dispatch(module.exports.setStatus('CLEAR_STATUS', module.exports.Status.FETCHING));
@@ -181,6 +193,14 @@ module.exports.clearAdminMessage = function (messageType, messageId, messageCoun
     };
 };
 
+/**
+ * Gets a user's messages to be displayed on the /messages page
+ * @param  {string}   username username of the user for whom the messages should be gotten
+ * @param  {string}   token    the user's unique token for auth
+ * @param  {object[]} messages an array of existing messages on the page, if there are any
+ * @param  {number}   offset   offset of messages to get, based on the number retrieved already
+ * @return {null}              returns nothing
+ */
 module.exports.getMessages = function (username, token, messages, offset) {
     return function (dispatch) {
         dispatch(module.exports.setStatus('MESSAGE_STATUS', module.exports.Status.FETCHING));
@@ -206,6 +226,12 @@ module.exports.getMessages = function (username, token, messages, offset) {
     };
 };
 
+/**
+ * Gets the messages from the Scratch Team for a user
+ * @param  {string} username user's username for whom to get the admin messages
+ * @param  {string} token    the user's unique token for auth
+ * @return {null}            returns nothing
+ */
 module.exports.getAdminMessages = function (username, token) {
     return function (dispatch) {
         dispatch(module.exports.setStatus('ADMIN_STATUS', module.exports.Status.FETCHING));
@@ -231,6 +257,12 @@ module.exports.getAdminMessages = function (username, token) {
     };
 };
 
+/**
+ * Gets the invitation to become a Scratcher for a user, if one exists
+ * @param  {string} username user's username for whom to get the invite
+ * @param  {string} token    the user's unique token for auth
+ * @return {null}            returns nothing
+ */
 module.exports.getScratcherInvite = function (username, token) {
     return function (dispatch) {
         api({