refactor(value): don't assign directly to the constructor

BREAKING CHANGE: use return value from constructor

Before:
class MyValue extends Value
  @constructor = 'Hello'

After:
class MyValue extends Value
  constructor: ->
    return 'Hello'

Author: CaryLandholt

README.md

@@ -634,16 +634,17 @@ angular.module('app').service('greetingService', ['$log',
 ### Value
 ```coffee
 class People extends Value
-	@constructor = [
-		{
-			name: 'Luke Skywalker'
-			age: 26
-		}
-		{
-			name: 'Han Solo'
-			age: 35
-		}
-	]
+	constructor: ->
+		return [
+			{
+				name: 'Luke Skywalker'
+				age: 26
+			}
+			{
+				name: 'Han Solo'
+				age: 35
+			}
+		]
 ```
 
 equivalent to

lib/moduleOptions.coffee

@@ -15,7 +15,7 @@ module.exports = (formatOptions, options) ->
 			provider: "angular.module('{{appName}}').{{moduleType|lowerCase}} '#{formatOptions.provider.prefix}{{className|#{formatOptions.provider.format}}}#{formatOptions.provider.suffix}', [{{parameters}}]"
 			run: "angular.module('{{appName}}').{{moduleType|lowerCase}} [{{parameters}}]"
 			service: "angular.module('{{appName}}').{{moduleType|lowerCase}} '#{formatOptions.service.prefix}{{className|#{formatOptions.service.format}}}#{formatOptions.service.suffix}', [{{parameters}}]"
-			value: "angular.module('{{appName}}').{{moduleType|lowerCase}} '#{formatOptions.value.prefix}{{className|#{formatOptions.value.format}}}#{formatOptions.value.suffix}', {{parameters}}.constructor"
+			value: "angular.module('{{appName}}').{{moduleType|lowerCase}} '#{formatOptions.value.prefix}{{className|#{formatOptions.value.format}}}#{formatOptions.value.suffix}', {{className}}()"
 		prefix: ''
 
 	merged = extend true, moduleOptions, options

test/ng-classify.spec.coffee

@@ -387,34 +387,36 @@ describe 'ng-classify', ->
 	it 'should compile a Value', ->
 		input = '''
 		class People extends Value
-			@constructor = [
-				{
-					name: 'Luke Skywalker'
-					age: 26
-				}
-				{
-					name: 'Han Solo'
-					age: 35
-				}
-			]
+			constructor: ->
+				return [
+					{
+						name: 'Luke Skywalker'
+						age: 26
+					}
+					{
+						name: 'Han Solo'
+						age: 35
+					}
+				]
 		'''
 
 		result = ngClassify input
 
 		expectation = '''
 		class People
-			@constructor = [
-				{
-					name: 'Luke Skywalker'
-					age: 26
-				}
-				{
-					name: 'Han Solo'
-					age: 35
-				}
-			]
+			constructor: ->
+				return [
+					{
+						name: 'Luke Skywalker'
+						age: 26
+					}
+					{
+						name: 'Han Solo'
+						age: 35
+					}
+				]
 
-		angular.module('app').value 'people', People.constructor
+		angular.module('app').value 'people', People()
 		'''
 
 		expect(result).toEqual(expectation)