Allow config to override app metadata

index.coffee

@@ -15,17 +15,24 @@ module.exports = (grunt) ->
 
     done = @async()
 
-    {appDirectory, authors, description, iconUrl, loadingGif, outputDirectory, owners} = grunt.config(@name)
-    outputDirectory ?= path.resolve('.')
-    loadingGif ?= path.resolve(__dirname, '..', 'resources', 'install-spinner.gif')
+    config = grunt.config(@name)
 
-    metadata = grunt.file.readJSON(path.join(appDirectory, 'resources', 'app', 'package.json'))
+    appDirectory = path.resolve(config.appDirectory)
 
-    metadata.authors ?= authors ? metadata.author?.name ? metadata.author ? ''
-    metadata.description ?= description ? ''
+    outputDirectory = config.outputDirectory ? '.'
+    outputDirectory = path.resolve(outputDirectory)
+
+    loadingGif = config.loadingGif ? path.resolve(__dirname, '..', 'resources', 'install-spinner.gif')
+    loadingGif = path.resolve(loadingGif)
+
+    appMetadata = grunt.file.readJSON(path.join(appDirectory, 'resources', 'app', 'package.json'))
+    metadata = _.extend({}, appMetadata, config)
+
+    metadata.authors ?= metadata.author?.name ? metadata.author ? ''
+    metadata.description ?= ''
     metadata.exe ?= "#{metadata.name}.exe"
-    metadata.iconUrl ?= iconUrl ? 'https://raw.githubusercontent.com/atom/atom-shell/master/atom/browser/resources/win/atom.ico'
-    metadata.owners ?= owners ? metadata.authors
+    metadata.iconUrl ?= 'https://raw.githubusercontent.com/atom/atom-shell/master/atom/browser/resources/win/atom.ico'
+    metadata.owners ?= metadata.authors
 
     template = _.template(grunt.file.read(path.resolve(__dirname, '..', 'template.nuspec')))
     nuspecContent = template(metadata)