adds basic files
Adds FileStructure object
- adds last() function to Array prototype
Merge pull request #1 from ClarkGH/filestructure

Adds FileStructure object
add cd logic
Merge pull request #2 from ClarkGH/cd

add cd logic
fixes descend bug
pwd function
adds go to home functionality for cd without params
fixes function call in CmdParser
Merge pull request #3 from ClarkGH/pwd

Pwd
Adds mkdir functionality
- Creates new directory without navigating to it
Merge pull request #4 from ClarkGH/mkdir

Adds mkdir functionality
Merge branch 'master' into angular_spike

Conflicts:
	index.html

-Added more organization to the file structure