Moving load and get into seperate functions so that textures can be refe...

...renced by name instead of path

This would be a breaking change, but for me, it's useful to be able to "name" my textures and forget about whether they are jpg, png, etc. This change also allows for some level of readability - you could have a program function called "loadTextures()" for example, and then later in main easily access those textures.