Clean up image links

Ulysses was adding hash marks in the MD code for images. Remove hash marks to clean up code.
Add circle and lat/lon popup code to map
Create code snippets for faster page creation

Snippets include Leaflet.css link, Leaflet.js link, custom css and the JavaScript code that draws the map, adds the tiles, and introduces interactivity to the map.
Merge branch 'master' of github.com:skeskali/Coding-Maps-With-Leaflet

Conflicts:
	01 - Create HTML Page.md
Clean up punctuation
Add page on creating map markers
Add slide presentation and images