chore(cleanup): cleanup structure & unused code

package.json

@@ -77,7 +77,9 @@
     "test:unit": "jest --verbose ./test",
     "test:unit:cover": "jest --verbose --coverage ./test",
     "build:commonjs": "cross-env NODE_ENV=commonjs babel src --out-dir lib",
+    "build:commonjs:watch": "npm run build:commonjs -- --watch",
     "build:es": "cross-env NODE_ENV=es babel src --out-dir es",
+    "build:es:watch": "npm run build:es -- --watch",
     "build": "npm run build:commonjs && npm run build:es",
     "fmt": "prettier --print-width=100 --tab-width=4 --bracket-spacing --no-semi --trailing-comma es5 --single-quote --color --write \"{src,specs,test}/**/*.js\"",
     "fmt:check": "prettier --print-width=100 --tab-width=4 --bracket-spacing --no-semi --trailing-comma es5 --single-quote --list-different \"{src,specs,test}/**/*.js\"",

src/Nivo.js

@@ -8,7 +8,7 @@
  */
 import { scaleOrdinal } from 'd3-scale'
 import { schemeSet3 } from 'd3-scale-chromatic'
-import { nivoCategoricalColors } from './ColorUtils'
+import { nivoCategoricalColors } from './lib/colorUtils'
 
 const defaults = {
     transitionDuration: 600,

src/components/axes/Axes.js

@@ -8,7 +8,7 @@
  */
 import React, { Component } from 'react'
 import PropTypes from 'prop-types'
-import { motion as motionPropTypes } from '../../PropTypes'
+import { motionPropTypes } from '../../props'
 import Axis from './Axis'
 
 const horizontalPositions = ['top', 'bottom']

src/components/axes/Axis.js

@@ -9,7 +9,7 @@
 import React, { Component } from 'react'
 import PropTypes from 'prop-types'
 import { TransitionMotion, spring } from 'react-motion'
-import { motion as motionPropTypes } from '../../PropTypes'
+import { motionPropTypes } from '../../props'
 import Nivo from '../../Nivo'
 import AxisTick from './AxisTick'