Change misleading label

Model/Sources/Model/Board.swift

@@ -61,10 +61,10 @@ public struct Board {
     // insertion coordinate computation is intentionally separated from actual insertion because the user may want to
     // display a where the piece would end-up before doing the actual insertion
     
-    public func getInsertionCoordinates(direction: Direction, offset: Int) -> Coords {
+    public func getInsertionCoordinates(from: Direction, offset: Int) -> Coords {
         precondition(offset >= 0, "Offset out of bounds")
         
-        switch direction {
+        switch from {
         case .Top:
             precondition(offset < self.columns, "Offset (column) out of bounds")
             return Coords(offset, 0)

Model/Tests/ModelTests/EmptyBoardTests.swift

@@ -79,7 +79,7 @@ final class EmptyBoardTests: XCTestCase {
     }
     
     private func _testInsertSide(side: Direction, offset: Int, expectedCoords: Coords) throws {
-        let result = board.getInsertionCoordinates(direction: side, offset: offset)
+        let result = board.getInsertionCoordinates(from: side, offset: offset)
         
         // Note: Not sure I want Coordinates to be a simple tuple or a struct, as both have advantages that the other dont:
         // Tuples can be initialized like so (col, row) which I find quite handy