Arthur Conde

Hello, ```js import HummusRecipe from 'hummus-recipe'; const pdfToEdit = SOMEPATH; const pdfToOverlay = ANOTHERPATH; const recipe = new HummusRecipe(pdfToEdit, 'output.pdf'); recipe.createPage(612,792).overlay(pdfToOverlay, 0, 0, { fitWidth: true, fitHeight: true }).endPDF(); ```...

An attempt to fix issue #205, which includes a syntax issue and chaining createPage().overlay()