Allow configuring minification, update readme and bump version.

README.md

@@ -81,6 +81,23 @@ Run `npm run cbuild -- --help` to see the command line options:
     -h, --help                   output usage information
 ```
 
+The `--builder-config` option accepts a JSON file containing
+[SystemJS builder bundle options](https://github.com/systemjs/builder/blob/master/docs/api.md#bundle-options) and
+[SystemJS configuration options](https://github.com/systemjs/systemjs/blob/master/docs/config-api.md#configuration-api)
+structured like:
+
+```JavaScript
+{
+	// Bundle options, for example:
+	"minify": true,
+
+	"config": {
+		// Configuration options, for example:
+		"buildCSS": false
+	}
+}
+```
+
 API
 ===
 Docs generated using [`docts`](https://github.com/charto/docts)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cbuild",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "Use SystemJS with npm instead of jspm",
   "main": "dist/cbuild.js",
   "typings": "dist/cbuild.d.ts",
@@ -27,14 +27,14 @@
   "dependencies": {
     "@types/bluebird": "^3.5.8",
     "@types/commander": "^2.9.2",
-    "@types/node": "^8.0.25",
+    "@types/node": "^8.0.26",
     "bluebird": "^3.5.0",
     "browser-resolve": "~1.11.2",
     "commander": "~2.11.0",
     "systemjs-builder": "~0.16.10"
   },
   "devDependencies": {
     "tslint": "^5.7.0",
-    "typescript": "^2.4.2"
+    "typescript": "^2.5.2"
   }
 }

src/cbuild.ts

@@ -372,7 +372,7 @@ export function build(basePath: string, options: BuildOptions = {}) {
 	const buildArguments: any[] = [ sourceUrl ];
 
 	if(bundlePath) buildArguments.push(bundlePath);
-	buildArguments.push({ config: builderPath ? require(builderPath) : null });
+	if(builderPath) buildArguments.push(require(builderPath));
 
 	// Call systemjs-builder.
 	built = makeBundle.apply(builder, buildArguments);