add images to index and reformat

source/index.rst

@@ -1,16 +1,48 @@
 .. figure:: https://www.opendronemap.org/wp-content/uploads/2018/07/odm-logo.svg
    :alt: OpenDroneMap Logo
-   :align: center
+   :align: left
+   :height: 60
+   :width: 60
 
-Welcome to OpenDroneMap's documentation!
-========================================
+Welcome to OpenDroneMap's documentation
+=======================================
+
+| 
+| 
+
+.. figure:: images/seedling.png
+    :alt: image of seedling
+    :align: right
+    :height: 70
+    :width: 70
 
 .. toctree::
-    :maxdepth: 3
-    :caption: Contents:
+	:maxdepth: 
+	:caption: Contents:
 
     installation
+
+
+.. figure:: images/pencil.png
+    :alt: image of pencil
+    :align: right
+    :height: 60
+    :width: 60
+		
+.. toctree::
+	:maxdepth: 3
+
     tutorials
+
+	.. figure:: images/flag.png
+	    :alt: image of flag
+	    :align: right
+	    :height: 60
+	    :width: 60
+
+.. toctree::
+	:maxdepth: 3
+
     arguments
     outputs
     large