added indexing to docs

Author: maxvhas

README.md

@@ -38,7 +38,13 @@ Creating a free and open source framework that contains the generic algorithms a
     1. [PSD](docs/plots.md#41-psd)
         1. [Parameters](docs/plots.md#411-parameters)
         2. [Returns](docs/plots.md#412-returns)
-        1. [Example usage](docs/plots.md#413-example-usage)
+        3. [Example usage](docs/plots.md#413-example-usage)
+    2. [Waterfall](docs/plots.md#41-psd)
+        1. [Construction](docs/plots.md#421-parameters)
+        2. [Methods](docs/plots.md#422-returns)
+        3. [Example usage](docs/plots.md#423-example-usage)
+            1. [Example usage](docs/plots.md#4231-with-discrete-data)
+            2. [Example usage](docs/plots.md#4232-with-stream-data)
 5. [Timeseries](docs/timeseries.md)
     1. [Initialize timeseries object](docs/timeseries.md#51-initialize-the-timeseries-object)
     2. [Retrieve timeseries](docs/timeseries.md#521-retrieve-timeseries-object)

docs/plots.md

@@ -63,7 +63,7 @@ plt.show()
 ## 4.2 Waterfall
 The `plot.waterfall.Waterfall` class can be used to generate waterfall plots. 
 
-### 4.1.1 Construction
+### 4.2.1 Construction
 
 | Parameter | Description |
 | --- | --- |
@@ -73,7 +73,7 @@ The `plot.waterfall.Waterfall` class can be used to generate waterfall plots.
 | fig | An imaging object, like `pyplot.figure()` |
 | mode | String `{discrete, stream}`. The mode to operate on. Use discrete for discrete datasets, and stream for stream data. Defaults to `stream`. |
 
-### 4.1.2 Methods
+### 4.2.2 Methods
 | Method | Description | Parameters |
 | --- | --- |
 | init_plot(self) | Initialize the plot |
@@ -84,8 +84,8 @@ The `plot.waterfall.Waterfall` class can be used to generate waterfall plots.
 | animated_plotter(self) | Returns the figure and update function for matplotlib animation |
 | get_center_freq(self) | Returns the center frequency stored in the filterbank header |
 
-### 4.1.3 Example Usage
-#### With discrete data
+### 4.2.3 Example Usage
+#### 4.2.3.1 With discrete data
 ```python
 import matplotlib.animation as animation
 from filterbank.header import read_header
@@ -103,7 +103,7 @@ img = wf.get_image()
 pyl.show(img)
 ```
 
-#### With stream data
+#### 4.2.3.2 With stream data
 ```python
 import matplotlib.animation as animation
 from filterbank.header import read_header