added the remaining images.

tutorials/Graph World/advance.ipynb

@@ -67,6 +67,8 @@
     "# Graph World\n",
     "Let's start with creating a Graph world using the image below. But this time we will not use the default settings and will customize our world.\n",
     "\n",
+    "<img src='../../resources/Graph_Advance.png' alt='Tree Abstract View' height=500>\n",
+    "\n",
     "## World Information\n",
     "Before creating the Graph World we have to first create the world blueprint/template. We call this blueprint/template as *world information*. This is like a abstract view of your world.\n",
     "\n",

tutorials/Graph World/beginner.ipynb

@@ -69,6 +69,8 @@
     "\n",
     "We will create a simple Graph as shown below with the default settings on.\n",
     "\n",
+    "<img src='../../resources/Graph_Beginning.png' alt='Graph Abstract View' height=500>\n",
+    "\n",
     "## World Information\n",
     "Before creating the Graph World we have to first create the world blueprint/template. We call this blueprint/template as *world information*. This is like a abstract view of your world.\n",
     "\n",

tutorials/Tree World/advance.ipynb

@@ -132,6 +132,9 @@
     "\n",
     "# Create a Tree World\n",
     "Let's start with creating a Tree world using the image below. But this time we will not use the default settings and will customize our world.\n",
+    "\n",
+    "<img src='../../resources/Tree_Advance.png' alt='Tree Abstract View' height=500>\n",
+    "\n",
     "We will make the following changes:\n",
     "- `radius`: Controls the size of each node of the tree.\n",
     "- `nodeColor`: Set's the color of all the nodes where the agent can move.\n",