Added new features

README.md

@@ -3,6 +3,7 @@
 ##Canvas
 ```  
 @ 100 100                         ; New canvas of size
+@ 100 100 ff0000                  ; New canvas with red background
 @ ?                               ; Clear canvas
 ```
 
@@ -12,6 +13,13 @@
 * ?                               ; Remove background
 ``` 
 
+##History
+``` 
+~                                 ; Keep image progress
+~ 3                               ; Keep image progress into temporary memory with id 3
+~ ?                               ; Clear history
+``` 
+
 ##Save File
 ``` 
 $ new_name.jpg                    ; Create a new file with name
@@ -21,6 +29,8 @@ $ new_name.jpg                    ; Create a new file with name
 ``` 
 / dir/file_name.jpg 10 10 100 100 ; Load image, at 10,10 with size 100x100
 / dir/file_name.jpg 10 10 100     ; Load image, at 10,10 with size 100w and auto height
+/ ~                               ; Load last history id
+/ 3                               ; Load history id
 ``` 
 
 ##Brush
@@ -46,6 +56,12 @@ $ new_name.jpg                    ; Create a new file with name
 | ?                               ; Remove guides
 ``` 
 
+##Translate
+``` 
++ 0 10                            ; Translate 10px vertically
+- 20 20                           ; Translate 20px leftward and downward
+``` 
+
 #Upcoming Features
 
 ##Zoom