Update LiveScript dependency

Thanks to @isiahmeadows for pointing out that LiveScript's module name
has changed (`npm outdated` wasn't picking it up) and that 1.3.x ->
1.4.x was all non-breaking changes.

Author: anko

package.json

@@ -34,7 +34,7 @@
   "bugs": "https://github.com/anko/eslisp/issues",
   "license": "ISC",
   "devDependencies": {
-    "LiveScript": "^1.3.1",
+    "livescript": "^1.4.0",
     "rimraf": "^2.4.1",
     "source-map": "^0.5.3",
     "tape": "^4.0.0",