Solved array.rs

Solved traits.rs

Solved ownership.rs

Solved struct.rs

Solved hash_map.rs

Solved strings.rs

Solved vec.rs

Solved integer.rs

Solved the_truth.rs

Solved boolean.rs

Solved addition.rs

Merge pull request #38 from pierd/master

Fix typo

Merge pull request #34 from jeeger/master

Corrected wording of &str-to-String concatenation.