retest md

README.md

@@ -1,12 +1,13 @@
 # Fillit
 
 ## To do
-- Check if we have a file
-- Read file
-[]Check if there are errors in file
-[]Transform file into tetriminos
-[]Check if every tetrimino is valid
-[]Backtracking for smallest square
-[]Print result
 
-[]Transform tetriminos with letters (?)
+- [x] Check if we have a file
+- [x] Read file
+- [ ]Check if there are errors in file
+- [ ]Transform file into tetriminos
+- [ ]Check if every tetrimino is valid
+- [ ]Backtracking for smallest square
+- [ ]Print result
+
+- [ ]Transform tetriminos with letters (?)