Added in-place documentation

[martinfrances107]

Identity key functions provide how to use examples
Review output of cargo doc ... look for any thing broken

key elements. Commonly used code.

1. Orthographic projection example.
2. clipping,
3. precision
4. rotating,
5. scaling translating

examples like this

/// Returns a person with the name given them
///
/// # Arguments
///
/// * name - A string slice that holds the name of the person
///
/// # Examples
///
/// /// // You can have rust code between fences inside the comments /// // If you pass --test to `rustdoc`, it will even test it for you! /// use doc::Person; /// let person = Person::new("name"); ///

[martinfrances107]

Added examples to the landing page.

239f1f1ccde5054a7c870479b4396ce1515de6e7

Still todo

Locate all function call that involve angles in degrees and document that.
Add test to describe the Stream Pipeline and Endpoints.