lib/output/modifiers/__tests__/inlinePng.js: Add test file for inlinePng modifier
lib/output/modifiers/__tests__/inlinePng.js: Add test file for inlinePng modifier

gencer/gitbook,ryanswanson/gitbook,gencer/gitbook,tshoper/gitbook,tshoper/gitbook,strawluffy/gitbook,GitbookIO/gitbook