diff --git a/.gitignore b/.gitignore
index 837291b..844bfdb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 logs
 *.log
 npm-debug.log*
+.DS_Store
 
 # Runtime data
 pids
diff --git a/example/index.html b/example/index.html
index 744fee8..f542155 100644
--- a/example/index.html
+++ b/example/index.html
@@ -2,9 +2,8 @@
 <meta charset="utf-8">
 <link type="text/css" rel="stylesheet" href="./css/earthjs.css">
 <script src="./js/d3.min.js"></script>
-<script src="./js/versor.js"></script>
+<script src="./js/topojson.min.js"></script>
 <script src="./js/queue.v1.min.js"></script>
-<script src="./js/topojson.v1.min.js"></script>
 <script src="../dist/earthjs.min.js"></script>
 <div class="set-options"></div>
 <svg id="earth"></svg>
diff --git a/example/js/topojson.min.js b/example/js/topojson.min.js
new file mode 100644
index 0000000..4554c42
--- /dev/null
+++ b/example/js/topojson.min.js
@@ -0,0 +1,2 @@
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e[1][2]-n[1][2]}function l(e){function n(n){for(var t=o[n];n>0;){var r=(n+1>>1)-1,a=o[r];if(e(t,a)>=0)break;o[a.index=n]=a,o[t.index=n=r]=t}}function t(n){for(var t=o[n];;){var r=n+1<<1,a=r-1,i=n,u=o[i];if(a<o.length&&e(o[a],u)<0&&(u=o[i=a]),r<o.length&&e(o[r],u)<0&&(u=o[i=r]),i===n)break;o[u.index=n]=u,o[t.index=n=i]=t}}var r={},o=[];return r.push=function(){for(var e=0,t=arguments.length;t>e;++e){var r=arguments[e];n(r.index=o.push(r)-1)}return o.length},r.pop=function(){var e=o[0],n=o.pop();return o.length&&(o[n.index=0]=n,t(0)),e},r.remove=function(r){var a=r.index,i=o.pop();return a!==o.length&&(o[i.index=a]=i,(e(i,r)<0?n:t)(a)),a},r}function d(e){if(!e)return v;var n,t,r=e.scale[0],o=e.scale[1],a=e.translate[0],i=e.translate[1];return function(e,u){u||(n=t=0),e[0]=(n+=e[0])*r+a,e[1]=(t+=e[1])*o+i}}function p(e){if(!e)return v;var n,t,r=e.scale[0],o=e.scale[1],a=e.translate[0],i=e.translate[1];return function(e,u){u||(n=t=0);var c=0|(e[0]-a)/r,s=0|(e[1]-i)/o;e[0]=c-n,e[1]=s-t,n=c,t=s}}function v(){}return{version:"1.4.5",mesh:n,feature:t,neighbors:u,presimplify:c}}();
diff --git a/example/js/versor.js b/example/js/versor.js
deleted file mode 100644
index 7ce6b72..0000000
--- a/example/js/versor.js
+++ /dev/null
@@ -1,79 +0,0 @@
-// Version 0.0.0. Copyright 2017 Mike Bostock.
-(function(global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
-  typeof define === 'function' && define.amd ? define(factory) :
-  (global.versor = factory());
-}(this, (function() {'use strict';
-
-var acos = Math.acos,
-    asin = Math.asin,
-    atan2 = Math.atan2,
-    cos = Math.cos,
-    max = Math.max,
-    min = Math.min,
-    PI = Math.PI,
-    sin = Math.sin,
-    sqrt = Math.sqrt,
-    radians = PI / 180,
-    degrees = 180 / PI;
-
-// Returns the unit quaternion for the given Euler rotation angles [λ, φ, γ].
-function versor(e) {
-  var l = e[0] / 2 * radians, sl = sin(l), cl = cos(l), // λ / 2
-      p = e[1] / 2 * radians, sp = sin(p), cp = cos(p), // φ / 2
-      g = e[2] / 2 * radians, sg = sin(g), cg = cos(g); // γ / 2
-  return [
-    cl * cp * cg + sl * sp * sg,
-    sl * cp * cg - cl * sp * sg,
-    cl * sp * cg + sl * cp * sg,
-    cl * cp * sg - sl * sp * cg
-  ];
-}
-
-// Returns Cartesian coordinates [x, y, z] given spherical coordinates [λ, φ].
-versor.cartesian = function(e) {
-  var l = e[0] * radians, p = e[1] * radians, cp = cos(p);
-  return [cp * cos(l), cp * sin(l), sin(p)];
-};
-
-// Returns the Euler rotation angles [λ, φ, γ] for the given quaternion.
-versor.rotation = function(q) {
-  return [
-    atan2(2 * (q[0] * q[1] + q[2] * q[3]), 1 - 2 * (q[1] * q[1] + q[2] * q[2])) * degrees,
-    asin(max(-1, min(1, 2 * (q[0] * q[2] - q[3] * q[1])))) * degrees,
-    atan2(2 * (q[0] * q[3] + q[1] * q[2]), 1 - 2 * (q[2] * q[2] + q[3] * q[3])) * degrees
-  ];
-};
-
-// Returns the quaternion to rotate between two cartesian points on the sphere.
-versor.delta = function(v0, v1) {
-  var w = cross(v0, v1), l = sqrt(dot(w, w));
-  if (!l) return [1, 0, 0, 0];
-  var t = acos(max(-1, min(1, dot(v0, v1)))) / 2, s = sin(t); // t = θ / 2
-  return [cos(t), w[2] / l * s, -w[1] / l * s, w[0] / l * s];
-};
-
-// Returns the quaternion that represents q0 * q1.
-versor.multiply = function(q0, q1) {
-  return [
-    q0[0] * q1[0] - q0[1] * q1[1] - q0[2] * q1[2] - q0[3] * q1[3],
-    q0[0] * q1[1] + q0[1] * q1[0] + q0[2] * q1[3] - q0[3] * q1[2],
-    q0[0] * q1[2] - q0[1] * q1[3] + q0[2] * q1[0] + q0[3] * q1[1],
-    q0[0] * q1[3] + q0[1] * q1[2] - q0[2] * q1[1] + q0[3] * q1[0]
-  ];
-};
-
-function cross(v0, v1) {
-  return [
-    v0[1] * v1[2] - v0[2] * v1[1],
-    v0[2] * v1[0] - v0[0] * v1[2],
-    v0[0] * v1[1] - v0[1] * v1[0]
-  ];
-}
-
-function dot(v0, v1) {
-  return v0[0] * v1[0] + v0[1] * v1[1] + v0[2] * v1[2];
-}
-
-return versor;
-})));
diff --git a/package.json b/package.json
index f1c190a..103f7f5 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "earthjs",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "D3 Earth JS using SVG, build with plugins.",
-  "main": "earthjs.js",
+  "main": "index.js",
   "scripts": {
     "test": "tape 'test/**/*-test.js' && mkdir -p test/output && eslint src",
     "build": "rollup -c && uglifyjs dist/earthjs.js -c -m -o dist/earthjs.min.js"
@@ -29,5 +29,9 @@
     "rollup-plugin-node-resolve": "^3.0.0",
     "tape": "^4.6.3",
     "uglify-js": "github:mishoo/UglifyJS2#harmony"
+  },
+  "dependencies": {
+    "d3": "^4.8.0",
+    "topojson": "^3.0.0"
   }
 }