add audio from days 10 and 11, add IBDesignable view with CISepiaToneFilter
remove copy of w3d1 and w3d2 slides
Merge branch 'master' of github.com:codefellows/sea-b19-ios
merge from remote master branch
removed conflicting w3d3 slides file
Merge branch 'master' of github.com:codefellows/sea-b19-ios
merge from remote master branch