crypto-square: add hint to @Ignore annotations

bob: add hint to @Ignore annotations

binary-search-tree: add hint to @Ignore tags

binary-search: add hint to @Ignore annotations

beer-song: add hint to @Ignore annotations

atbash-cipher: add hint to @Ignore annotations

rna-transcription: rename "ofDna" with "transcribe"

run-length-encoding: add to track

Made a for loop more typical.
Test assertion parameters are on seperate lines.

Test ordering fixed.
Example uses StringBuilders
Example uses one loop encode method
added braces to one-line if statements
etc.

Add central policies document

simple-linked-list: add hint to @Ignore annotations

bracket-push: add hint to @Ignore annotations

binary-search-tree: use Collections.singletonList

Fixes: #512

Fixes: #513

book-store: add hint to @Ignore annotation

ocr-numbers: add hint to @Ignore annotations

strain: add hint to @Ignore annotations

rectangles: add hint to @Ignore annotations

meetup: add hint to @Ignore annotations

triangle: add hint to @Ignore annotations

robot-name: add hint to @Ignore annotations

largest-series-product: add hint to @Ignore annotations

matrix: add hint to @Ignore annotations

nth prime: add hint to @Ignore annotations