Ignore examples/ because it is an independent workspace to test rules_ruby

Fixes #3

Author: yugui

.bazelignore

@@ -0,0 +1 @@
+examples

.travis.yml

@@ -32,10 +32,10 @@ before_install:
 - bazel $BAZEL_OPTS fetch --curses=no -- "//ruby/..."
 - (cd examples && bazel $BAZEL_OPTS fetch --curses=no -- "//...")
 install:
-- bazel $BAZEL_OPTS build $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 -- //ruby/...
+- bazel $BAZEL_OPTS build $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 -- //...
 - (cd examples && bazel $BAZEL_OPTS build $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 -- //...)
 script:
-- bazel $BAZEL_OPTS test $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 --test_output=streamed -- //ruby/...
+- bazel $BAZEL_OPTS test $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 --test_output=streamed -- //...
 - (cd examples && bazel $BAZEL_OPTS test $BAZEL_BUILD_OPTS --show_progress_rate_limit 0 --test_output=streamed -- //...)
 
 env: