Updated the org.omg.sysml.site README.

Author: seidewitz

org.omg.sysml.site/README.md

@@ -10,14 +10,17 @@
 
 3. Select `Add...` and then, in the add dialog, select `Archive...` .
 
-4. Navigate to the `org.omg.sysml.site-0.3.0.zip` archive and select it. (You can give it a name if you wish.)
+4. Navigate to the `org.omg.sysml.site-0.3.0.zip` archive and select it. (You can give it a name if you wish.) Click `Add`.
 
 5. In the Install window, select the `KerML and SysML Editors` category and click `Next`.
 
-6. Continue with the installation, and, when it is complete, restart Eclipse.
+6. Continue with the installation (select `Install Anyway` if asked), and, when it is complete, restart Eclipse.
 
 ## Installing the model library and modeling projects
 
+**Note:** If you are updating an existing installation of an earlier SysML v2 release, then, before proceeding with the procedure
+below, delete the `kerml`, `sysml` and `sysml.library` projects from your workspace, selecting `Delete project contents from disk`.
+
 1. Select `File > Import`.
 
 2. Under `General`, choose `Existing Projects into Workspace`.
@@ -35,13 +38,18 @@
 After installation is complete, if you wish to turn `Build Automatically` back on, first go to `Preferences > General > Workspace > Build`
 and make sure that `sysml.library` is before `kerml` and `sysml` in the build order.
 
+<br>
+
 ## Creating model files
 
 1. Create Kernel Modeling Language (KerML) files in the `kerml/src` directory. The extension for a KerML file is `.kerml`.
 
-2. Create Systems Modeling Language (SysML) files in the `sysml/src` directory. The extension for a SysML fiile is `.sysml`.
+2. Create Systems Modeling Language (SysML) files in the `sysml/src` directory. The extension for a SysML file is `.sysml`.
+
+3. Alternatively, you can create a separate project for your KerML or SysML files. Create the project as a Java project, with
+the `sysml.library` project on the build path.
 
-3. You can view the model library files in the `sysml.library` project, but *do not change them*.
+4. You can view the model library files in the `sysml.library` project, but *do not change them*.
 
 **Release Note:** In the current implementation, there are cases in which the processing of a file with several name resolution errors can take a very long time, 
 particularly if the `Quantities and Units` library is being used. This will be fixed in a future release.