Can't serve components locally when installing from git

[cpsievert]

pip install git+https://github.com/plotly/dash-core-components.git

import dash
from dash.dependencies import Input, Output
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash(csrf_protect = False)

app.scripts.config.serve_locally = True

app.layout = html.Div([
    dcc.Input(id='inputID', value='initial value', type="text"),
    html.Div(id='outputID')
])

@app.callback(
    Output(component_id='outputID', component_property='children'),
    [Input(component_id='inputID', component_property='value')]
)
def update_output_div(input_value):
    return 'You\'ve entered "{}"'.format(input_value)

if __name__ == '__main__':
    app.run_server()