Fixed entries in package.json so that package works with TypeScript. (#…

…11)

The TypeScript entries were still set to some default values, which
prevented the index.d.ts from getting generated correctly.
Also fixed up the url/directory for the package.

javascript/package.json

@@ -5,7 +5,8 @@
   "homepage": "https://github.com/aws-geospatial/polyline",
   "repository": {
     "type": "git",
-    "url": "https://github.com/aws-geospatial/polyline"
+    "url": "git+https://github.com/aws-geospatial/polyline.git",
+    "directory": "javascript"
   },
   "bugs": {
     "url": "https://github.com/aws-geospatial/polyline/issues",
@@ -30,8 +31,9 @@
     "test": "jest --collectCoverage --collectCoverageFrom=src/**/*.{ts,js}",
     "typedoc": "typedoc"
   },
-  "main": "./dist/math.js",
-  "exports": "./dist/math.js",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/esm/index.js",
+  "types": "./dist/types/index.d.ts",
   "files": [
     "dist/",
     "!**/__tests__/**"