added description for glossbot

GlossBot/README.md

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+# GlossBot
+
+This bot will add words and expressions to a file.
+    
+You can use this code in the chat by calling three different options in the chat:
+
+    "@glossary-add word": adds the word "word" in the list
+    "@glossary-drift": returns a term from the list that was selected by chance
+    "@glossary-all": returns a list of all the saved expressions.
+
+To run this bot, type the following command in your terminal:
+
+    python3 gather.py -d -j gatherbot@conversejs.org -r muc_name@muc.vvvvvvaria.org -n gatherbot -p testing -o .