Added divisor check for all division methods which throws runtime exception if divisor is zero

[Hasn-Saeed]

Each division method located in src/com/jwetherell/algorithms/mathematics/Division.java has been updated with a check which ensures that division by 0 is not attempted. In case that a 0 has been sent to the method as the divisor, an IllegalArgumentException is thrown and a message is printed which indicates that the divisor cannot be 0.

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[Hasn-Saeed]

Inserted a check in each division method which ensures that the divisor is not 0. In case that a 0 is sent, an IllegalArgumentException error is thrown and a message is displayed which explains that division by 0 cannot occur

[Hasn-Saeed]

Runtime exception triggered when division by 0 is attempted by any of the division methods within Division.java