Update Main.cpp

Test of VectorBasic.cpp works!

Output:
 / +0.000000 \
|  +3.000000  |
|  -9.800000  |
|  +3.000000  |
 \ +1.000000 /
 / +0.000000 \
|  +3.000000  |
|  -9.800000  |
|  +3.000000  |
 \ +1.000000 /
tada!


(beautiful!)