update for go1.5+

[mh-cbon]

Hi,

I updated your package to be compatible with vendor feature available since go 1.5. I modified the project layout,

• moved src/* to root/
• removed vendor folder
• added glide manifest
• added vendor to gitignore
• updated the dependencies

I also linted the code with go-lint, and found few questions that you may consider to fix in your code, if you won t accept that full PR, see,

• https://github.com/Redundancy/gosync-cmd/compare/master...mh-cbon:master#diff-678e3aa9b05c7c965c15d033c8c5594cR77
• https://github.com/Redundancy/gosync-cmd/compare/master...mh-cbon:master#diff-678e3aa9b05c7c965c15d033c8c5594cR91
• https://github.com/Redundancy/gosync-cmd/compare/master...mh-cbon:master#diff-678e3aa9b05c7c965c15d033c8c5594cR102
• https://github.com/Redundancy/gosync-cmd/compare/master...mh-cbon:master#diff-65c563bba473be9d94ce4d033f74810eR73

Besides that i updated the README to better document the program, see https://github.com/mh-cbon/gosync-cmd.