Move opentracing bridge out of experimental (#245)

* move bridge out of the experimental directory

* drop a leftover from experimental stuff in gitignore

found by accident when doing `git grep experimental`.

.gitignore

@@ -8,4 +8,3 @@ coverage.*
 /example/http/client/client
 /example/http/server/server
 /example/namedtracer/namedtracer
-/experimental/streaming/example/basic/basic

bridge/opentracing/bridge.go

@@ -30,7 +30,7 @@ import (
 	otelcore "go.opentelemetry.io/api/core"
 	oteltrace "go.opentelemetry.io/api/trace"
 
-	"go.opentelemetry.io/experimental/bridge/opentracing/migration"
+	"go.opentelemetry.io/bridge/opentracing/migration"
 )
 
 type bridgeSpanContext struct {
@@ -322,7 +322,7 @@ func (t *BridgeTracer) StartSpan(operationName string, opts ...ot.StartSpanOptio
 	})
 	if checkCtx != checkCtx2 {
 		t.warnOnce.Do(func() {
-			t.warningHandler("SDK should have deferred the context setup, see the documentation of go.opentelemetry.io/experimental/bridge/opentracing/migration\n")
+			t.warningHandler("SDK should have deferred the context setup, see the documentation of go.opentelemetry.io/bridge/opentracing/migration\n")
 		})
 	}
 	if hadTrueErrorTag {

bridge/opentracing/doc.go

@@ -97,4 +97,4 @@
 // LogFields() function, so when the call to the function gets
 // translated to OpenTelemetry AddEvent() function, an empty context
 // is passed.
-package opentracing // import "go.opentelemetry.io/experimental/bridge/opentracing"
+package opentracing // import "go.opentelemetry.io/bridge/opentracing"

bridge/opentracing/internal/doc.go

@@ -12,4 +12,4 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package internal // import "go.opentelemetry.io/experimental/bridge/opentracing/internal"
+package internal // import "go.opentelemetry.io/bridge/opentracing/internal"

bridge/opentracing/internal/mock.go

@@ -27,7 +27,7 @@ import (
 	otelkey "go.opentelemetry.io/api/key"
 	oteltrace "go.opentelemetry.io/api/trace"
 
-	"go.opentelemetry.io/experimental/bridge/opentracing/migration"
+	"go.opentelemetry.io/bridge/opentracing/migration"
 )
 
 var (

bridge/opentracing/migration/api.go

@@ -15,7 +15,7 @@
 // This package provides interfaces and functions that are useful for
 // providing a cooperation of the OpenTelemetry tracers with the
 // OpenTracing API.
-package migration // import "go.opentelemetry.io/experimental/bridge/opentracing/migration"
+package migration // import "go.opentelemetry.io/bridge/opentracing/migration"
 
 import (
 	"context"

bridge/opentracing/mix_test.go

@@ -27,7 +27,7 @@ import (
 	oteltrace "go.opentelemetry.io/api/trace"
 	"go.opentelemetry.io/global"
 
-	"go.opentelemetry.io/experimental/bridge/opentracing/internal"
+	"go.opentelemetry.io/bridge/opentracing/internal"
 )
 
 type mixedAPIsTestCase struct {

bridge/opentracing/wrapper.go

@@ -19,7 +19,7 @@ import (
 
 	oteltrace "go.opentelemetry.io/api/trace"
 
-	migration "go.opentelemetry.io/experimental/bridge/opentracing/migration"
+	migration "go.opentelemetry.io/bridge/opentracing/migration"
 )
 
 type WrapperProvider struct {