Add coin module (#106)

* Added new module and test file for coinflip feature. (src/coinflip.py and tests/test_coinflip.py)

* Fixed the typo error in test_coinflip.py

* actually fixed the parenthesis error this time.

* Changed module name to 'coinflip'. Cleaned up code. Fixed error in test.

Author: seongju

modules/src/__init__.py

@@ -2,6 +2,7 @@
     'anime',
     'book',
     'bye',
+    'coin',
     'currency',
     'dictionary',
     'fact',

modules/src/coin.py

@@ -0,0 +1,12 @@
+import random
+from templates.text import TextTemplate
+
+def process(input, entities):
+    output = {}
+    output['input'] = input
+    if random.randrange(0,2,1):
+            output['output'] = TextTemplate("Sure, it's heads!").get_message()
+    else:
+            output['output'] = TextTemplate("Sure, it's tails!").get_message()
+    output['success'] = True
+    return output

modules/tests/test_coin.py

@@ -0,0 +1,7 @@
+import modules
+
+def test_coinflip():
+        assert('coin' == modules.process_query('Flip a coin')[0])
+        assert('coin' == modules.process_query('Jarvis flip a coin')[0])
+        assert('coin' == modules.process_query('Can you flip a coin')[0])
+        assert('coin' != modules.process_query('something random')[0])