Created resources list

diff --git a/README.md b/README.md
index 1854ed161b5f6202602bab5dc080a636964661e3..1636eaa88338be9653cd67a2ef3ffc2d2ad5107d 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+
 # Pixel count
  Counts the number of pixels of one color in a PNG image encoded in RBG.
  Preferably with just one IDAT chunk.
@@ -6,4 +7,17 @@
  
     gcc pixel-count.c -lz [-lm]
     
- lm flag is optional, you might or might not need to link the math library
\ No newline at end of file
+ lm flag is optional, you might or might not need to link the math library
+
+
+ Resources (in no particular order):
+ - https://www.w3.org/TR/2003/REC-PNG-20031110/
+ - https://www.libpng.org/pub/png/spec/1.2/
+ - https://pyokagan.name/blog/2019-10-14-png/
+ - https://hexed.it/
+ - https://www.nayuki.io/page/png-file-chunk-inspector
+ - https://github.com/madler/zlib
+ - https://stackoverflow.com/questions/42934720/understanding-the-zlib-header-cmf-cm-cinfo-flg-fdict-dictid-flevel-rfc
+ - Tons of other stackoverflow answers
+ 
+Checked solution with https://townsean.github.io/canvas-pixel-color-counter/