Did this the other day!
So make sure you have "flickity": "1.0.0"
in your list of bower dependencies…
I was able to get Flickity working by adding this to my list of overrides in the bower.json file…
"overrides": {
"modernizr": {
"main": "./modernizr.js"
},
"bootstrap": {
"main": [
...bootstrap js files here
]
},
"flickity": {
"main": [
"./dist/flickity.pkgd.js",
"./dist/flickity.min.css"
]
}
}