book update

Author: Ioannis Giagkiozis

docs/book/src/fundamentals.md

@@ -1 +1,21 @@
+<div align="center">
+    <a href="https://github.com/igiagkiozis/plotly/tree/master">
+        <img src="https://img.shields.io/badge/Plotly.rs-master-brightgreen" alt="build status">
+    </a>
+    <a href="https://github.com/igiagkiozis/plotly/actions">
+        <img src="https://github.com/igiagkiozis/plotly/workflows/build/badge.svg" alt="build status">
+    </a>
+    <a href="https://crates.io/crates/plotly">
+        <img src="https://img.shields.io/crates/v/plotly.svg" alt="Crates.io">
+    </a>
+	<a href="https://docs.rs/plotly">
+        <img src="https://docs.rs/plotly/badge.svg" alt="Documentation">
+    </a>
+    <a href="">
+        <img src="https://img.shields.io/badge/Minimum%20Rust%20Version-1.31-brightgreen.svg" alt="Minimum Version">
+    </a>
+</div>
+
 # Fundamentals
+
+Functionality that applies to the library as a whole is described in the next sections. 

docs/book/src/getting_started.md

@@ -1,4 +1,3 @@
-# Getting Started
 <div align="center">
     <a href="https://github.com/igiagkiozis/plotly/tree/master">
         <img src="https://img.shields.io/badge/Plotly.rs-master-brightgreen" alt="build status">
@@ -17,6 +16,8 @@
     </a>
 </div>
 
+# Getting Started
+
 To start using [Plotly.rs](https://github.com/igiagkiozis/plotly) in your project add the following to your `Cargo.toml`:
 
 ```toml

docs/book/src/plotly_rs.md

@@ -1,4 +1,3 @@
-# Plotly.rs
 <div align="center">
     <a href="https://github.com/igiagkiozis/plotly/tree/master">
         <img src="https://img.shields.io/badge/Plotly.rs-master-brightgreen" alt="build status">
@@ -17,6 +16,8 @@
     </a>
 </div>
 
+# Plotly.rs
+
 Plotly.rs is a plotting library powered by [Plotly.js](https://plot.ly/javascript/). The aim is to bring over to Rust all the functionality that `Python` users have come to rely on; with the added benefit of type safety and speed.
 
 Plotly.rs is free and open source. You can find the source on [GitHub](https://github.com/igiagkiozis/plotly). Issues and feature requests can be posted on the [issue tracker](https://github.com/igiagkiozis/plotly/issues).

docs/book/src/recipes.md

@@ -1,3 +1,21 @@
+<div align="center">
+    <a href="https://github.com/igiagkiozis/plotly/tree/master">
+        <img src="https://img.shields.io/badge/Plotly.rs-master-brightgreen" alt="build status">
+    </a>
+    <a href="https://github.com/igiagkiozis/plotly/actions">
+        <img src="https://github.com/igiagkiozis/plotly/workflows/build/badge.svg" alt="build status">
+    </a>
+    <a href="https://crates.io/crates/plotly">
+        <img src="https://img.shields.io/crates/v/plotly.svg" alt="Crates.io">
+    </a>
+	<a href="https://docs.rs/plotly">
+        <img src="https://docs.rs/plotly/badge.svg" alt="Documentation">
+    </a>
+    <a href="">
+        <img src="https://img.shields.io/badge/Minimum%20Rust%20Version-1.31-brightgreen.svg" alt="Minimum Version">
+    </a>
+</div>
+
 # Recipes
 
 Most of the recipes presented here have been adapted from the official documentation for [plotly.js](https://plotly.com/javascript/) and [plotly.py](https://plotly.com/python/). Contributions of interesting plots that showcase the capabilities of the library are most welcome. For more information on the process please see [the contributing guidelines](https://github.com/igiagkiozis/plotly/blob/master/CONTRIBUTING.md).