feat(demo): add scatter and candlestick demos

Closes #22

Author: ngfelixl

test/demo/candlestick.js

@@ -0,0 +1,44 @@
+const npl = require('../../dist/lib');
+
+const trace1 = {
+  x: ['2017-01-04', '2017-01-05', '2017-01-06', '2017-01-09', '2017-01-10', '2017-01-11', '2017-01-12', '2017-01-13', '2017-01-17', '2017-01-18', '2017-01-19', '2017-01-20', '2017-01-23', '2017-01-24', '2017-01-25', '2017-01-26', '2017-01-27', '2017-01-30', '2017-01-31', '2017-02-01', '2017-02-02', '2017-02-03', '2017-02-06', '2017-02-07', '2017-02-08', '2017-02-09', '2017-02-10', '2017-02-13', '2017-02-14', '2017-02-15'], 
+  close: [116.019997, 116.610001, 117.910004, 118.989998, 119.110001, 119.75, 119.25, 119.040001, 120, 119.989998, 119.779999, 120, 120.080002, 119.970001, 121.879997, 121.940002, 121.949997, 121.629997, 121.349998, 128.75, 128.529999, 129.080002, 130.289993, 131.529999, 132.039993, 132.419998, 132.119995, 133.289993, 135.020004, 135.509995], 
+  decreasing: {line: {color: '#7F7F7F'}}, 
+  high: [116.510002, 116.860001, 118.160004, 119.43, 119.379997, 119.93, 119.300003, 119.620003, 120.239998, 120.5, 120.089996, 120.449997, 120.809998, 120.099998, 122.099998, 122.440002, 122.349998, 121.629997, 121.389999, 130.490005, 129.389999, 129.190002, 130.5, 132.089996, 132.220001, 132.449997, 132.940002, 133.820007, 135.089996, 136.270004], 
+  increasing: {line: {color: '#17BECF'}}, 
+  line: {color: 'rgba(31,119,180,1)'}, 
+  low: [115.75, 115.809998, 116.470001, 117.940002, 118.300003, 118.599998, 118.209999, 118.809998, 118.220001, 119.709999, 119.370003, 119.730003, 119.769997, 119.5, 120.279999, 121.599998, 121.599998, 120.660004, 120.620003, 127.010002, 127.779999, 128.160004, 128.899994, 130.449997, 131.220001, 131.119995, 132.050003, 132.75, 133.25, 134.619995], 
+  open: [115.849998, 115.919998, 116.779999, 117.949997, 118.769997, 118.739998, 118.900002, 119.110001, 118.339996, 120, 119.400002, 120.449997, 120, 119.550003, 120.419998, 121.669998, 122.139999, 120.93, 121.150002, 127.029999, 127.980003, 128.309998, 129.130005, 130.539993, 131.350006, 131.649994, 132.460007, 133.080002, 133.470001, 135.520004], 
+  type: 'candlestick', 
+  xaxis: 'x', 
+  yaxis: 'y'
+};
+
+const data = [trace1];
+
+const layout = {
+  dragmode: 'zoom', 
+  margin: {
+    r: 10, 
+    t: 25, 
+    b: 40, 
+    l: 60
+  }, 
+  showlegend: false, 
+  xaxis: {
+    autorange: true, 
+    domain: [0, 1], 
+    range: ['2017-01-03 12:00', '2017-02-15 12:00'], 
+    rangeslider: {range: ['2017-01-03 12:00', '2017-02-15 12:00']}, 
+    title: 'Date', 
+    type: 'date'
+  }, 
+  yaxis: {
+    autorange: true, 
+    domain: [0, 1], 
+    range: [114.609999778, 137.410004222], 
+    type: 'linear'
+  }
+};
+
+npl.plot(data, layout);

test/demo/scatter.js

@@ -0,0 +1,3 @@
+const npl = require('../../dist/lib');
+npl.stack([{ x: [0], y: [1], type: 'scatter'}])
+npl.plot()