Add detailed content about integers to Chapter 3

src/SUMMARY.md

@@ -1,4 +1,27 @@
 # Summary
 
-- [Introduction](./introduction.md)
-- [Chapter 1](./chapter_1.md)
+# Introduction
+
+-   [Introduction](./introduction.md)
+
+# Rust Environment Setup
+
+-   [Chapter 1](./chapter_1.md)
+
+# Rust Command Line Tools
+
+-   [Command Line Tool](chapter_02/introduction.md)
+    -   [init](chapter_02/init.md)
+    -   [build](chapter_02/build.md)
+    -   [watch](chapter_02/watch.md)
+    -   [serve](chapter_02/serve.md)
+    -   [test](chapter_02/test.md)
+    -   [clean](chapter_02/clean.md)
+    -   [completions](chapter_02/completions.md)
+
+# Rust Essentials
+
+-   [Chapter_03](chapter_03/introduction.md)
+    -   [integer_dtypes](chapter_03/integer_dtypes.md)
+    -   [Floats](chapter_03/float_dtypes.md)
+    -   [Characters](chapter_03/characters_dtypes.md)

src/chapter_02/build.md

@@ -0,0 +1 @@
+# build

src/chapter_02/clean.md

@@ -0,0 +1 @@
+# clean

src/chapter_02/completions.md

@@ -0,0 +1 @@
+# completions

src/chapter_02/init.md

@@ -0,0 +1 @@
+# init

src/chapter_02/introduction.md

@@ -0,0 +1 @@
+# Command Line Tool

src/chapter_02/serve.md

@@ -0,0 +1 @@
+# serve

src/chapter_02/test.md

@@ -0,0 +1 @@
+# test

src/chapter_02/watch.md

@@ -0,0 +1 @@
+# watch

src/chapter_03/float_dtypes.md

@@ -0,0 +1,3 @@
+# Float Data Types in Rust
+
+Float data types in Rust