Hand-written makefile

Compile toxic without autotools
Update Makefile

Cosmetic fixes
Use pkg-config for toxcore and toxav
Makefile: checks for libs
Makefile: add toxic version
Remove autotools
Remove autotools
Remove autotools
Remove autotools
Remove autotools
Remove autotools
Makefile: add per-system defaults

This is only an empty structure, but I hope it will help for add per-system defaults in future
Makefile: fix typo
Makefile: remove Windows support and bump version
Update .travis.yml: remove autotools
Makefile: use <TAB> instead of <SPACE>
Makefile: move to "build/"
Update .travis.yml: moved makefile in "build/"
Merge pull request #149 from Ansa89/without-autotools

Remove autotools dependency
Update .travis.yml: cosmetic fixes