Add spec with usage of progress bar component

components/progress_bar/style.styl

@@ -24,7 +24,7 @@
     background-color            : SECONDARY
 
   [data-component-progressbar-buffer]
-    background-color            : lighten(SECONDARY, 70%)
+    background-color            : alpha(SECONDARY, 15%)
 
   &.indeterminate > [data-component-progressbar-value]
     transform-origin              center center

spec/components/progress.cjsx

@@ -0,0 +1,45 @@
+###
+@todo
+###
+
+ProgressBar = require '../../components/progress_bar'
+
+module.exports = React.createClass
+
+  # -- States & Properties
+  getInitialState: ->
+    progress: 0
+    buffer:   10
+
+  # -- Lifecycle
+  componentWillMount: ->
+    @simulateProgress()
+
+  # -- Simulate kind of a progress async function
+  simulateProgress: ->
+    setTimeout =>
+      if @state.progress < 100
+        @increaseProgress()
+        @increaseBuffer() if @state.progress > @state.buffer
+      else
+        @replaceState @getInitialState()
+      @simulateProgress()
+    , (Math.random() * 1 + 1) * 1000
+
+  increaseProgress: ->
+    @setState progress: Math.random() * 30 + @state.progress
+
+  increaseBuffer: ->
+    @setState buffer: Math.random() * (100 - @state.progress) + @state.progress
+
+  # -- Render
+  render: ->
+    <section>
+      <h2>Progress bars</h2>
+
+      <p>Determinate</p>
+      <ProgressBar value={@state.progress} buffer={@state.buffer}/>
+
+      <p>Indeterminate...</p>
+      <ProgressBar indeterminate={true}/>
+    </section>

spec/index.cjsx

@@ -7,6 +7,7 @@ Button        = require './components/button'
 Dialog        = require './components/dialog'
 Dropdown      = require './components/dropdown'
 Form          = require './components/form'
+Progress      = require './components/progress'
 
 # React           = require('react/addons')
 # TestUtils       = React.addons.TestUtils
@@ -30,6 +31,7 @@ Test = React.createClass
       <Button />
       <Dialog />
       <Dropdown />
+      <Progress />
     </app>
 
 React.render <Test/>, document.body