fixed typo in README.md
added manifests, package and vcs structures to env package
added utilities to run commands, and updated cache.Compile
fixed build
finished Packages method in env package, wip
fixed wrong formats
fixed Packages method, added tests
added export command and tests, missing some pieces yet
os.Unsetenv is only present in go1.4, get rid of it on tests
fixed tests
export command finished, small code reestructurarion
fixed commnands_tests in travis
added revision information in the packages manifest
fixed tests
some small refactor for tests on Packages method
added import (wip), small refactor
import done, tests passing, missing functional tests
fixed wrong BeforeEach
import operative, refactor needed
refactor in the vcs, added scheme detection like in go get