Making Tutorial notebook easier to run on colab directly (#239)

* Making Tutorial notebook easier to run on colab directly

* Update Tutorial.ipynb

* Update README.md

README.md

@@ -1,6 +1,6 @@
 `pretty_midi` contains utility function/classes for handling MIDI data, so that it's in a format which is easy to modify and extract information from.
 
-Documentation is available [here](http://craffel.github.io/pretty-midi/).  You can also find a Jupyter notebook tutorial [here](https://nbviewer.org/github/craffel/pretty-midi/blob/main/Tutorial.ipynb).
+Documentation is available [here](http://craffel.github.io/pretty-midi/).  You can also find a Jupyter notebook tutorial [here](https://nbviewer.org/github/craffel/pretty-midi/blob/main/Tutorial.ipynb) (click [here](https://colab.research.google.com/github/craffel/pretty-midi/blob/main/Tutorial.ipynb) to load in Colab).
 
 `pretty_midi` is available via [pip](https://pypi.python.org/pypi/pretty_midi) or via the [setup.py](https://github.com/craffel/pretty-midi/blob/master/setup.py) script. In order to synthesize MIDI data using fluidsynth, you need the [fluidsynth](http://www.fluidsynth.org/) program and [pyfluidsynth](https://pypi.python.org/pypi/pyfluidsynth).
 

Tutorial.ipynb

@@ -15,6 +15,10 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# Uncomment to install dependecies to run on Colab:\n",
+    "#!sudo apt-get install fluidsynth\n",
+    "#!pip install pretty_midi mir_eval pyfluidsynth\n",
+    "\n",
     "# For Python2.6 compatibility\n",
     "from __future__ import print_function\n",
     "\n",