Add translation of InstrumentationLibraryInfo to Jaeger (#801)

* Add translation of InstrumentationLibraryInfo to Jaeger

* Fix case

* Rename InstrumentationLibraryInfo to InstrumentationLibrary

* Better wording

specification/trace/sdk_exporters/jaeger.md

@@ -0,0 +1,38 @@
+# OpenTelemetry to Jaeger Transformation
+
+This document defines the transformation between OpenTelemetry and Jaeger Spans.
+Jaeger's v2 API is defined in the
+[jaeger model.proto](https://github.com/jaegertracing/jaeger-idl/blob/master/proto/api_v2/model.proto)
+
+## Summary
+
+The following table summarizes the major transformations between OpenTelemetry
+and Jaeger.
+
+TBD
+
+## Mappings
+
+This section discusses the details of the transformations between OpenTelemetry
+and Jaeger.
+
+### InstrumentationLibrary
+
+OpenTelemetry Span's `InstrumentationLibrary` MUST be reported as span `tags` to Jaeger using the following mapping.
+
+| OpenTelemetry | Jaeger |
+| ------------- | ------ |
+| `InstrumentationLibrary.name`|`otel.instrumentation_library.name`|
+| `InstrumentationLibrary.version`|`otel.instrumentation_library.version`|
+
+### Attribute
+
+TBD
+
+### Status
+
+TBD
+
+### Events
+
+TBD