README-en.md edited online with Bitbucket

README-en.md

     2. Remember that, in C++, when both operands in the division are integers, the result will also be an integer; the remainder will be discarded. Use "type casting": `static_cast<type>(expression)` to solve this problem.
 
 3. Verify your program by computing the GPA of a student that has two A's and 2 B's; what is the grade of this student, A or B (A goes from 3.5 to 4 points)? When your program is correct, save the `main.cpp` file. 
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