fix tenses
small updates to spelling, double space removal
* fix "'s" spelling for ISAs
* fix comas
* add definite/indefinite article where needed
* fix verb forms (have/has, work/works)
comment on lisp machines/more complex cpus
* fix comas
* add definite/indefinite article where needed
* fix tenses
add note on branch delay slot explanation
fix definitive article, other small things, small styling fixes
fix definitive article, other small things, small styling fixes
fix definitive article, other small things, small styling fixes, word ordering
fix definitive article, remove some redundant words
Merge pull request #35 from krokodilerian/master

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