Line renderer how to create and edit

Hello I am trying to create a simple circle but i keep getting an error with my script.

The error is:

The type or namespace name `lineRenderer` could not be found. Are you missing a using directive or an assembly reference?

I don’t know what my mistake is I am trying to learn as I go by looking at other people’s example codes yet this happens.

This is my current code:

using UnityEngine;
using System.Collections;

public class CircleTest : MonoBehaviour {

	public float radius 		= 1.0f;
	public int 	 vertexCount	= 20;
	public Color color1			= new Color(0.5f,0.5f,0.5f,1.0f);

	private int 			angle;
	private Vector3 		pos;
	private lineRenderer 	LineRenderer;

	void Start()
	{
		LineRenderer = gameObject.AddComponent<LineRenderer> ();
		LineRenderer.SetColors(c1, c1);
		LineRenderer.SetWidth(0.05, 0.05);
		LineRenderer.SetVertexCount(vertexCount+1);


		for(int i = 0; i < vertexCount+1; i++)
		{
			angle 	= i;
			i 		= (i / vertexCount) * Mathf.PI * 2;
			pos 	= new Vector3(Mathf.Cos(angle), Mathf.Sin(angle), 0) * radius;
			LineRenderer.SetPosition(i, pos);
		}
	}
}

Currently my game simply has an empty game object with this C# script attached. I didn’t manually add a Line Render component as I assume the C# script does that for me in the Start function.

So what am i getting wrong here?

@SirChick

this line of code:

    private lineRenderer     LineRenderer;

you need to capitalize L for the variable type and not capitalize it for the variable name