Altering switching power supply schematic to generate 5v instead of 3.3v at 5A
To get 5-V output, you need to change the the feedback resistors accordingly, or select the fixed-output version of the IC, as advised by MartinF. However, this should be the least of worries for a novice to make the regulator working, and at full 5A output. 

To make it working, please follow the manufacturer's suggested layout as close as possible when making the PCB. Forget any "breadboarding". Then use their "component calculator" to select proper inductor and capacitor types. 

The best way is to find a demo board for this IC, and follow its BOM to last specification. There is a demo board for a similar LM22677 IC, use it as the guide.  Make sure that the design has sufficient thermal dissipation properties, and described in Section 10.3, since at 5 A the design efficiency is under 70% (or need to dissipate 7.5W), and the IC/inductor will be hot and even might need a substantial heat sink. And good luck.