Reorg and prep for alpha release (#432)

scss/font-awesome-core.scss

@@ -0,0 +1,12 @@
+@import "variables";
+@import "mixins";
+@import "core";
+@import "larger";
+@import "fixed-width";
+@import "list";
+@import "bordered-pulled";
+@import "animated";
+@import "rotated-flipped";
+@import "stacked";
+@import "icons";
+@import "screen-reader";