Ability to compare 2 folders

[omegascorp]

Go Folder Compare lib should be able to do a shallow compare of 2 folders.

Structs:
FolderSnapshot - should keep a snapshot of a folder

Functions:

// Creates folder snapshot using folder path
func CreateSnapshot(folderPath string) *FolderSnapshot
// Shows diff between 2 folders as a floating point number between 0 and 1, 0 - no diff, 1 - compleatly different
func CompareSnapshots(firstFolder, secondFolder) float32

Code example:

var firstSnapshot *FolderSnapshot
var secondSnapshot *FolderSnapshot
firstSnapshot = folderCompare.CreateSnapshot("src/something")
secondSnapshot = folderCompare.CreateSnapshot("src/something/else")
folderCompare.CompareSnapshots(firstFolder * FolderSnapshot, secondFolder * FolderSnapshots)

Coding style requirement: Fast assignment construction (:=) should not be used.

During project design, we should keep in mind that in the future it should be able to compare with multiple folders and find the best match.