Adding com_fieldsdemo to gitignore.
New data member 'hint' added in JFormField class.
Hint added to JFormFieldText class.
Hint added to JFormFieldTextarea class.
Hint added to JFormFieldPassword class.
Hint added to JFormFieldEmail class.
Hint added to JFormFieldCalendar class.
Adding fallback js and making suitable change in JFormFieldText class.
Inserting comment in JFormFieldText.
Adding fallback for placeholder to calendar, email, password, textarea.
Adding hint and its fallback to color field.
Removing fallback from password field.
Adding code to translate hint text.
Merge pull request #37 from Achal-Aggarwal/attr-placeholder

Adding placeholder (hint) to form fields.