Merge pull request #582 from endurance21/deprecation

added deprecation handling for p5.Signal

Author: montoyamoraga

src/app.js

@@ -140,3 +140,7 @@ p5.OnsetDetect = OnsetDetect;
 
 import PolySynth from './polysynth';
 p5.PolySynth = PolySynth;
+
+// Following are the deprecated classes
+import Signal from './deprecations/Signal';
+p5.Signal = Signal;

src/deprecations/Signal.js

@@ -0,0 +1,7 @@
+class Signal {
+  constructor() {
+    console.warn('p5.Signal is deprecated , Use Tone.js Signal instead ');
+  }
+}
+
+export default Signal;