Update README.md

README.md

@@ -1,9 +1,19 @@
 # complex-plotting-tools
 Module for plotting complex-valued functions of complex variable using different methods.
 
+## Table of contents
+
+- [Examples gallery](#Examples-gallery)
+- [Examples 1](#Examples-1)
+- [Examples 2](#Examples-2)
+
 ## Examples gallery
 
-#### Examples with the function <img src="https://render.githubusercontent.com/render/math?math=f(z)%20%3D%20%5Cfrac%7B(z%5E2-1)(z-2-1j)%5E2%7D%7Bz%5E2%2B2%2B2j%7D">
+### Examples 1 
+
+<p align="center">
+<img src="https://render.githubusercontent.com/render/math?math=%5Cmathbf%7Bf(z)%20%3D%20%5Cfrac%7B(z%5E2-1)(z-2-i)%5E2%7D%7Bz%5E2%2B2%2B2i%7D%7D">
+</p>
 
 ![](cplotting-images/domain_coloring.png) |  ![](cplotting-images/domain_coloring_cmap.png)
 | ------------- | ------------- |
@@ -14,7 +24,11 @@ Module for plotting complex-valued functions of complex variable using different
 ![](cplotting-images/real_contour.png)  |  ![](cplotting-images/imag_contour.png)
 ![](cplotting-images/mod_contour.png)  |  ![](cplotting-images/both_contour.png)
 
-#### Examples with the function <img src="https://render.githubusercontent.com/render/math?math=f(z)%20%3D%20%5Ccos%20z">
+### Examples 2 
+
+<p align="center">
+<img src="https://render.githubusercontent.com/render/math?math=%5Cmathbf%7Bf(z)%20%3D%20%5Ccos%20z%7D">
+</p>
 
 ![](cplotting-images/vector_cos.png)  |  ![](cplotting-images/vector_cmap_cos.png)
 | ------------- | ------------- |