diff --git a/README.md b/README.md
index acb8cd9..350a1c1 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,4 @@
-
-![Fractal](out.png "Fractal")
+![Mandelbrot fractal](mandelbrot.png "Fractal")
 
 Requires
 
@@ -8,9 +7,9 @@ Requires
 
 ### How to run
 
-```sh
-$ cabal install JuicyPixels
-$ ghc main.hs
-$ ./main
+```shell
+cabal update
+cabal install --lib JuicyPixels
+ghc -Wall -Werror main.hs
+./main
 ```
-
diff --git a/fractal.pgm b/mandelbrot.pgm
similarity index 100%
rename from fractal.pgm
rename to mandelbrot.pgm
diff --git a/out.png b/mandelbrot.png
similarity index 100%
rename from out.png
rename to mandelbrot.png
diff --git a/mandelbrot2pgm b/mandelbrot2pgm
new file mode 100755
index 0000000..e33e22a
Binary files /dev/null and b/mandelbrot2pgm differ
diff --git a/pgm.hs b/mandelbrot2pgm.hs
similarity index 96%
rename from pgm.hs
rename to mandelbrot2pgm.hs
index 1e928e2..725a7d8 100644
--- a/pgm.hs
+++ b/mandelbrot2pgm.hs
@@ -75,4 +75,4 @@ frac c z iter
 -- The file output
 pgmHeader :: C.ByteString  
 pgmHeader = C.pack ("P5\n" ++ (show width) ++ " " ++ (show height) ++ "\n255\n")  
-main = C.writeFile "fractal.pgm" (C.append pgmHeader (C.concat [(row y) | y <- yList]))  
+main = C.writeFile "mandelbrot.pgm" (C.append pgmHeader (C.concat [(row y) | y <- yList]))  
diff --git a/mandelbrot2png b/mandelbrot2png
new file mode 100755
index 0000000..a14420d
Binary files /dev/null and b/mandelbrot2png differ
diff --git a/main.hs b/mandelbrot2png.hs
similarity index 94%
rename from main.hs
rename to mandelbrot2png.hs
index 9c8526f..b9f66ca 100644
--- a/main.hs
+++ b/mandelbrot2png.hs
@@ -36,5 +36,5 @@ render xi yi = grayify . realize $ fractal (x :+ y) (0 :+ 0) 0
     sharpen v        = 1 - exp (-exp ((v - 0.92) / 0.031))
 
 main :: IO ()
-main = writePng "out.png" $ generateImage render width height
+main = writePng "mandelbrot.png" $ generateImage render width height