.vimrc: pick color scheme based on current daytime

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
.vimrc: remove some whitespace

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
.vim/spell/en.utf-8.add: add some new words

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
.bash_env: move VAGRANT_APT_CACHE to pi

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
.bash_env: set GOPATH

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
.gitignore: do not keep .spl files in the repository

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>