Merge pull request #673 from catchpoint/fix_mouseclick

Fix mouseclick command check

Author: lbartoli79

internal/devtools_browser.py

@@ -777,7 +777,7 @@ def process_command(self, command):
                 if keyModifier in KeyModifiers.keys():
                     modifier = KeyModifiers[keyModifier]
             self.devtools.keypress(command['target'], modifier)
-        elif command['command'] == 'mouseClick':
+        elif command['command'] == 'mouseclick':
             if 'target' in command:
                 target = command['target']
                 separator = target.find('=')