Don't use git symbolic-ref --short

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Merge branch 'for-precise' into develop

This fixes a bug in `git lp push` that prevented any branch from
being pushed exported

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Bump version to 0.1.3

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Merge branch 'release/0.1.3'