Initial skeleton x86_64 support

* Needs proprietary files and toybox

README.md

@@ -19,10 +19,13 @@ _make gapps_arm64_
 _make gapps_x86_
 - compile signed flashable GApps for x86
 
+_make gapps_x86_64_
+- compile signed flashable GApps for x86_64
+
 Build inline with Android
 -------------------
 1. Sync this repo to $GAPPS_PATH where $GAPPS_PATH is the path to this repo
-2. Include $GAPPS_PATH/$ARCH/$ARCH-vendor.mk where $ARCH is arm, arm64, or x86 depending on the device's architecture
+2. Include $GAPPS_PATH/$ARCH/$ARCH-vendor.mk where $ARCH is arm, arm64, x86, or x86_64 depending on the device's architecture
 
 Explanation of pinned blobs
 -------------------