Add logo in documentation

Author: stijnh

docs/index.rst

@@ -1,9 +1,6 @@
 .. highlight:: c++
    :linenothreshold: 1
 
-Kernel Launcher
-===========================================
-
 .. toctree::
    :maxdepth: 1
    :hidden:
@@ -15,6 +12,24 @@ Kernel Launcher
    api
    license
 
+.. raw:: html
+
+   <!--
+
+Kernel Launcher
+===============
+
+.. raw:: html
+
+   --><h1>
+
+.. image:: /logo.png
+   :width: 670
+   :alt: kernel launcher
+
+.. raw:: html
+
+   </h1>
 
 *Kernel Launcher* is a C++ library that makes it easy to dynamically compile *CUDA* kernels at run time (using `NVRTC <https://docs.nvidia.com/cuda/nvrtc/index.html>`_) and call them in easy type-safe way using C++ magic.
 There are two reasons for using run-time compilation: