Prefer global instead link-local iface addr

Some environments may assign multiple IP addresses
on a single interface. It's better to use a global
address to a link-local one (which was probably used
for bootstrapping).

Fixes #73
Add support for TLS between flannel and etcd

Fixes #63
Merge pull request #96 from eyakubovich/tls

Add support for TLS between flannel and etcd
Bug fix: base64 encoded data appeared in lease attrs

For some reason, json.Marshal'ing struct (vs ptr to it)
has odd interaction with json.RawMessage.

Fixes #97
Merge pull request #94 from eyakubovich/link-local

Prefer global instead link-local iface addr
Merge pull request #99 from eyakubovich/base64-bug

Bug fix: base64 encoded data appeared in lease attrs
Top-level Dockerfile will build using golang:onbuild

dist/build-docker has been added to produce images
based on flannelbox.

Fixes #75
Merge pull request #100 from eyakubovich/flannel-git

Top-level Dockerfile will build using golang:onbuild
Update -etcd-endpoints command line option in README

This patch updates the "key command line options" section in the README to reflect the changes regarding -etcd-endpoint(s) made in 74f9413deb00c0ca01bfb217aa56717b6edcfe64
Merge pull request #104 from patrickhoefler/feature/fix_etcd-endpoints_in_readme

Update -etcd-endpoints command line option in README
bump to v0.2.0
bump to 0.2.0+git