Set onclick for button, Arrange spacing between assignment

I defined a method to be called during onclick for the button which
is used to set the emergency numbers.
I made the indentation proper by introducing a space on either side of
the equal's to sign in assignment statements.

Signed-off-by: Aditya Prasad <adityaprasadiskool@gmail.com>
Make activity to edit emergency numbers

I have designed (Layout over) the activity where the 3 emergency
numbers are added to the application's memory.
The intent to this activity has also been created.

Signed-off-by: Aditya Prasad <adityaprasadiskool@gmail.com>