Update page 'Manage Vendors'

Manage-Vendors.md

@@ -0,0 +1,26 @@
+## Manage Vendors
+
+This page is used to add a new vendor, or to edit a pre-existing one. 
+
+
+![Manage Vendors Help Image](https://raw.githubusercontent.com/CS-4820-Library-Project/Libly/master/images/ManageVendorsHelp.png)
+
+**Select Vendors**
+This is a list of any vendors that have previously been added
+
+
+**Edit Vendor**
+If a vendor is selected in the list on the left. The vendor's information will be shown here. These fields correspond to all possible pieces of information that you may have for a vendor. 
+Name is the only required field for a vendor.
+
+**"Local only vendor" checkbox** can be checked to signal that this vendor is used only for file imports and is not going to be used to fetch data from a vendor. 
+
+* Save Changes: Saves the above text fields to the selected vendor
+* Undo Changes: Reloads the Vendor details that are currently saved
+* Remove Vendor: Deletes the vendor and its accompanying data
+
+* Add a new vendor opens a separate window asking the user to enter all the data they have in order to create the new vendor profile. 
+
+
+
+