Preparing release v1.1.0 (jaegertracing#338)

* Prepare release v1.0.2

Fix CSS selector in get-changelog.js script.

Signed-off-by: Joe Farro <[email protected]>

* Change to version v1.1.0 instead of v1.0.2

Signed-off-by: Joe Farro <[email protected]>

Prepare release v1.0.1 (jaegertracing#330)

Signed-off-by: Joe Farro <[email protected]>

Prepare release v1.0.0 and update CONTRIBUTING.md (jaegertracing#314)

Signed-off-by: Joe Farro <[email protected]>