You got a ways to do. The coding in this is great, good job. You need more information in the summoner spells, masteries, and runes could use more too. What i mean is provide some detail: why this rune and not another rune? Are there alternative builds to experiment with?

For the items section, you should explain purchase order (i doubt you get homeguard before brutalizer). Work on it a bit and you've got your +1.

there is a lot of information missing here.Your explanations are too brief.In addition you have 2 skill sequence chapters.Just add the info from the first on to the second .it'll look better like this.
There is still much room for improvement.