Add comments using set journal entry (#1384)

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* Create readme.md

* Delete Styles/Add Background Color directory

* Create addComment.js

Function to add comments to a record through setJournalEntry()

* Create readme.md

* Update addComment.js

Fixed the spelling error in setJournalEntry

Author: kmohit2809

Background Scripts/Add Comments/addComment.js

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+function addComments(tableName,recSysId, userName, fieldName){
+var rec = new GlideRecord(tableName);
+if(rec.get(recSysId)){
+  rec[fieldName].setJournalEntry('This is my comment',userName);
+  rec.update();
+}
+}
+
+addComments(tableName,recSysId,userName,fieldName);

Background Scripts/Add Comments/readme.md

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+There have been scenarios where you are working on an integration and one of the usecase is to add comments on a record. In this scenario once you add comments directly
+to the record by assigning the value in the comments or work_notes field, it captures it as a integration user in the activity formatter. But with setJournalEntry() 
+method you can pass the user_name and it will add the comment on behalf of the user whose user_name is passed. In this way it easy to track who is actually modifying 
+the record or adding the comments. Hope this will be a helpful snippet.
+
+In this function the paramters are defined as:
+tableName: Name of the table on which you are adding the comments.
+recSysId: sys_id of the record for which the comment is getting added.
+userName: user_name of the user who is adding the comments
+fieldName: It can be either comments or work_notes or any custom journal entry field.