Generate Rails manifest.json

Initial steps toward closing [tricknotes/ember-cli-rails#30][#30].

* Generate Rails `manifest.json` when building from Rails.
* Prepend Sprockets path to EmberCLI assets.
* Default fingerprinting to no generate `MD5` hash when building in
  `development`.

[#30]: tricknotes/ember-cli-rails#30

CHANGELOG.md

@@ -1,6 +1,13 @@
 master
 ------
 
+* Generate Rails `manifest.json` when building from Rails.
+  Prepend Sprockets path to EmberCLI assets.
+  Default fingerprinting to no generate `MD5` hash when building in
+  `development`.  [#17].
+
+[#17]: https://github.com/rondale-sc/ember-cli-rails-addon/pull/17
+
 0.0.13
 ------
 

index.js

@@ -25,10 +25,16 @@ module.exports = {
     app.options.storeConfigInMeta = false;
     app.options.SRI = app.options.SRI || {};
     app.options.SRI.enabled = false;
+    app.options.fingerprint = app.options.fingerprint || {};
 
-    if (process.env.DISABLE_FINGERPRINTING === 'true') {
-      app.options.fingerprint = app.options.fingerprint || {};
-      app.options.fingerprint.enabled = false;
+    if (typeof process.env.RAILS_ENV !== 'undefined') {
+      app.options.fingerprint.enabled = true;
+      app.options.fingerprint.generateRailsManifest = true;
+      app.options.fingerprint.prepend = '/assets/' + app.name + '/';
+
+      if (app.env !== 'production') {
+        app.options.fingerprint.customHash = null;
+      }
     }
 
     if (process.env.EXCLUDE_EMBER_ASSETS) {