Update README

README.md

@@ -41,24 +41,35 @@ So what does this mean for you?
 
 1. You only need to build a file once!  Just create [multiple TOC files](https://wowpedia.fandom.com/wiki/TOC_format#Multiple_client_flavors),
    one for each supported game type, and game versions will be set from them on
-   upload.  So if you've already been dabbling with multiple tocs and/or
+   upload.  So if you've already been dabbling with multiple TOC files and/or
    multiple versions, you no longer need to manually set the versions via `-g`
    or on the CurseForge website.
+
+   **Note:** CurseForge still requires that a fallback TOC file exists.  So if
+   you support all three game types, you may as well leave the fallback TOC file
+   as one of the game types instead of creating three game type specific ones.
+
 2. If you are using multiple `## Interface-Type` lines in your TOC file, you can
-   now use the `-S` option to automatically generate game type specific TOC
-   files based on your existing preproccessing logic.  You will still need to
-   merge `.pkgmeta` files if your old workflow used a different file per build.
-3. If you use build type keywords (e.g., `@version-retail@` ... `@end-version-retail@`)
-   for controlling what code blocks execute based on the build version, in a
-   multi-version build, everything will get commented out since no specific
-   version is being targeted.
-
-   For a multi-version build, you should switch keyword usage to plain old lua
-   control statements.  Fortunately, there are builtin constants you can use for
-   this.  `WOW_PROJECT_ID` is what game version you are currently running and
-   can be checked against `WOW_PROJECT_MAINLINE`, `WOW_PROJECT_CLASSIC`, and
-   `WOW_PROJECT_BURNING_CRUSADE_CLASSIC` (e.g., `if WOW_PROJECT_ID ==
-   WOW_PROJECT_MAINLINE then ... end`).
+   now use the `-S` command line option or add `enable-toc-creation: yes` to
+   your `.pkgmeta` file to automatically generate game type specific TOC files
+   based on your existing preprocessing logic.  The fallback TOC file will use
+   the base interface value as it's version.
+
+   ```toc
+   ## Interface: 90105
+   ## Interface-Classic: 11402
+   ## Interface-BCC: 20502
+   ```
+
+   Splitting the above TOC file would end up with `MyAddon_Vanilla.toc`,
+   `MyAddon_TBC.toc`, and `MyAddon.toc` (retail).
+
+3. If you use build version keywords (e.g., `@version-retail@` ... `@end-version-retail@`)
+   for controlling what code blocks execute based on the build version, you
+   need to switch to plain old Lua control statements.  Fortunately, there are
+   some [constants](https://wowpedia.fandom.com/wiki/WOW_PROJECT_ID) set by
+   Blizzard you can use for this.  If you use these keywords in xml files, you
+   will have to reorganize your includes in the appropriate TOC files.
 
 ## Customizing the build
 
@@ -358,6 +369,7 @@ environment provided the following are available:
 
 - bash >= 4.3
 - awk
+- grep
 - sed
 - curl
 - zip