Move Jupyter kernel into notebooks dir.

diff --git a/docs/jupyter_kernel/Try out the Joypy Jupyter Kernel.ipynb b/docs/notebooks/jupyter_kernel/Try out the Joypy Jupyter Kernel.ipynb
similarity index 100%
rename from docs/jupyter_kernel/Try out the Joypy Jupyter Kernel.ipynb
rename to docs/notebooks/jupyter_kernel/Try out the Joypy Jupyter Kernel.ipynb

diff --git a/docs/jupyter_kernel/joy_kernel.py b/docs/notebooks/jupyter_kernel/joy_kernel.py
similarity index 100%
rename from docs/jupyter_kernel/joy_kernel.py
rename to docs/notebooks/jupyter_kernel/joy_kernel.py

diff --git a/docs/jupyter_kernel/kernel.json b/docs/notebooks/jupyter_kernel/kernel.json
similarity index 100%
rename from docs/jupyter_kernel/kernel.json
rename to docs/notebooks/jupyter_kernel/kernel.json