Add motion guidelines

- Update transition global variables in bootstrap to use Carbon
motion easing and duration tokens to maintain consistency throughout
the application
- Remove import of colors helper file into variables and set import
order based on dependency

Signed-off-by: Derick Montague <derick.montague@ibm.com>
Change-Id: Ibd3fb9438ff236670e5523250d284b59411a7e53
diff --git a/docs/.vuepress/config.js b/docs/.vuepress/config.js
index a07000e..8f94ff5 100644
--- a/docs/.vuepress/config.js
+++ b/docs/.vuepress/config.js
@@ -37,6 +37,7 @@
             children: [
               "/guide/guidelines/",
               "/guide/guidelines/colors",
+              "/guide/guidelines/motion",
               "/guide/guidelines/typography"
             ]
           },