Add solutions from my repo

https://github.com/JIghtuse/rosetta
Add descriptions to new files, fix url
Remove unfinished example
Add solution for file size task
Add solution for file renaming
Merge branch 'master' of https://github.com/eliovir/rust-rosetta
Update files according to /JIghtuse/rosetta

Add travis button
Fix swap example (swap was moved to std::mem)
Fix merge commit