Update readme

Author: linkdotnet

README.md

@@ -1,2 +1,29 @@
 # golang-stringbuilder
-A string builder that has similiar capabilities as the one from C#.
+A string builder that has similar capabilities as the one from C#. The goal is to have a straightforward API that lets you work with strings easily.
+
+## Install
+
+To install the package, call:
+```bash
+go get -u github.com/linkdotnet/golang-stringbuilder 
+```
+
+## Usage
+```golang
+package sample
+
+import (
+	"fmt"
+
+	Text "github.com/linkdotnet/golang-stringbuilder"
+)
+
+func main() {
+	sb := Text.StringBuilder{}
+	sb.Append("Hello")
+	sb.Append(" ")
+	sb.Append("World")
+	fmt.Println(sb.ToString())
+}
+
+```