Finished the instalation script, added files

* Finished the install.sh script - it will install stuff + dependencies
  (those can be skipped)

* Renamed files that will be symlinked from .afile to a.afile.symlink,
  now all those files will be simlinked (still, if you want them to be sourced,
  you need to add new files to .bash_profile)

* Added more dependencies (core and additional packages that need to be installed)