Merged in bodqhrohro/neboard-1/bodqhrohro/pillow-now-requires-zlib-too-1522164393285 (pull request #27)

Pillow now requires zlib too

Approved-by: Bohdan Horbyeshko <[e-mail]>

readme.markdown

@@ -22,6 +22,7 b' Some minimal system-wide depenencies:'
 * python3
 * pip/pip3
 * jpeg
+* zlib
 
 Python dependencies: