Merge pull request #3115 from Carreau/fix-example

avoid references to files outside of examples directory
    
request for packaging, it would be nice for example not to reference
files outside of example directory
copy ../../_static/logo.png in logo/logo.png
use subfolder for demo purpose of targeting subfolder in demo notebook

examples/notebooks/Part 5 - Rich Display System.ipynb

@@ -111,7 +111,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "i = Image(filename='../../docs/source/_static/logo.png')"
+      "i = Image(filename='logo/logo.png')"
      ],
      "language": "python",
      "metadata": {},
@@ -416,6 +416,8 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "from IPython.display import Image\n",
+      "\n",
       "# by default Image data are embedded\n",
       "Embed      = Image(    'http://scienceview.berkeley.edu/view/images/newview.jpg')\n",
       "\n",
@@ -1094,6 +1096,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "from IPython.display import HTML\n",
       "HTML('<iframe src=http://en.mobile.wikipedia.org/?useformat=mobile width=700 height=350></iframe>')"
      ],
      "language": "python",
@@ -1234,4 +1237,4 b''
    "metadata": {}
   }
  ]
-}

  No newline at end of file
+}