Contains the geneic function which takes generic type of 2 numbers and returns their resut when divided

Example

``` let a = 7; let b = 2;

asserteq!(Some(3), withoutdiv_sym::divide(a,b)); ```

Problems

This crate doesnt accept floating point number yet. i will work on that on next versions. the example below will cause an error

``` let a = 15.0; let b = 5.0; asserteq!(some(3.0), withoutdiv_sym::divide(a,b)); // This wont complie, it will bring out an error

```