Update README.md

Macro defines in the text called for -8500 rather than -8050.  Made the change so documentation matches the script.

Author: HowardBaxton

README.md

@@ -6,11 +6,11 @@ nPose V3 and above.
 ## Usage
 Add the following line to the top of your `.init` NC (if you don't have an `.init` NC then create one):
 ```
-PLUGINCOMMAND|PRIMEDIT|-8500
+PLUGINCOMMAND|PRIMEDIT|-8050
 ```
 If you want to use the Prim Params Editor plugin for props add the following lines (instead of the above);
 ```
-PLUGINCOMMAND|PRIMEDIT|-8500|1
+PLUGINCOMMAND|PRIMEDIT|-8050|1
 ```
 The plugin contains 2 scripts `nPose Prim Params Editor plugin, main` (we will call it the `main`script) and `nPose Prim Params Editor plugin, storage` (we will call it the `storage`script).
 ### `main` Script