Use correct setting

Author: iccir

README.md

@@ -70,7 +70,7 @@ To be a good citizen of the ecosystem, Timeless will not use language-specific i
 
 <img src="docs/fileicons1.png" width=126 height=24>
 
-To activate additional icons, set the `theme.timeless.icons.install_additional` setting to `true`. This will add a `Caches/Timeless Icon Support` folder with the support files necessary to enable additional language-specific icons:
+To activate additional icons, set the `theme.timeless.icons.install_support_files` setting to `true`. This will add a `Caches/Timeless Icon Support` folder with the support files necessary to enable additional language-specific icons:
 
 <img src="docs/fileicons2.png" width=126 height=64>
 
@@ -82,9 +82,9 @@ For alternate icons, set the `theme.timeless.icons.install_c_letters` setting to
 
 <img src="docs/fileicons4.png" width=106 height=24>
 
-This setting will install `C++ Header.sublime-syntax` and `C++ Header.sublime-settings` into the `Caches/Timeless Icon Support` folder. It will also modify `Packages/User/C++.sublime-settings`. This setting has no effect if `theme.timeless.icons.install_additional` is `false`.
+This setting will install `C++ Header.sublime-syntax` and `C++ Header.sublime-settings` into the `Caches/Timeless Icon Support` folder. It will also modify `Packages/User/C++.sublime-settings`. This setting has no effect if `theme.timeless.icons.install_support_files` is `false`.
 
-To revert back to the default state, set `theme.timeless.icons.install_additional` to `false`. This should fix broken icons in other themes.
+To revert back to the default state, set `theme.timeless.icons.install_support_files` to `false`. This should fix broken icons in other themes.
 
 Timeless is also compatible with [AFileIcon](https://github.com/SublimeText/AFileIcon) for icon management.