Update main readme (open-telemetry#484)

mauriciovasquezbernal · web-flow · commit 3654a86f7542 · 2020-03-13T13:48:22.000-07:00
Remove duplicated content from the main readme and add a link to the online
documentation.
diff --git a/README.md b/README.md
@@ -45,63 +45,11 @@ pip install -e ./opentelemetry-sdk
 pip install -e ./ext/opentelemetry-ext-{integration}
 ```
 
-## Quick Start
-
-### Tracing
-
-```python
-from opentelemetry import trace
-from opentelemetry.sdk.trace import TracerProvider
-from opentelemetry.sdk.trace.export import ConsoleSpanExporter
-from opentelemetry.sdk.trace.export import SimpleExportSpanProcessor
-
-trace.set_preferred_tracer_provider_implementation(lambda T: TracerProvider())
-trace.tracer_provider().add_span_processor(
-    SimpleExportSpanProcessor(ConsoleSpanExporter())
-)
-tracer = trace.get_tracer(__name__)
-with tracer.start_as_current_span('foo'):
-    with tracer.start_as_current_span('bar'):
-        with tracer.start_as_current_span('baz'):
-            print("Hello world from OpenTelemetry Python!")
-```
-
-### Metrics
-
-```python
-from opentelemetry import metrics
-from opentelemetry.sdk.metrics import Counter, MeterProvider
-from opentelemetry.sdk.metrics.export import ConsoleMetricsExporter
-from opentelemetry.sdk.metrics.export.controller import PushController
-
-metrics.set_preferred_meter_provider_implementation(lambda _: MeterProvider())
-meter = metrics.get_meter(__name__)
-exporter = ConsoleMetricsExporter()
-controller = PushController(meter=meter, exporter=exporter, interval=5)
-
-counter = meter.create_metric(
-    name="available memory",
-    description="available memory",
-    unit="bytes",
-    value_type=int,
-    metric_type=Counter,
-    label_keys=("environment",),
-)
-
-label_set = meter.get_label_set({"environment": "staging"})
-bound_counter = counter.bind(label_set)
-bound_counter.add(100)
-```
-
-See the [API documentation](https://open-telemetry.github.io/opentelemetry-python/) for more detail, and the [examples folder](./examples) for a more sample code.
-
-## Extensions
-
-### Third-party exporters
-
-OpenTelemetry supports integration with the following third-party exporters.
+## Documentation
 
--  [Azure Monitor](https://github.com/microsoft/opentelemetry-exporters-python/tree/master/azure_monitor)
+The online documentation is available at https://opentelemetry-python.readthedocs.io/,
+if you want to access the documentation for the latest version use
+https://opentelemetry-python.readthedocs.io/en/latest/.
 
 ## Contributing
 
@@ -170,11 +118,12 @@ includes:
 - Flask Integration
 - PyMongo Integration
 
-The v0.4 alpha release includes:
+The [v0.4 alpha
+release](https://github.com/open-telemetry/opentelemetry-python/releases/tag/v0.4.0) release includes:
 
 - Metrics MinMaxSumCount Aggregator
-- Context API 
-- Full Metrics SDK Pipeline 
+- Context API
+- Full Metrics SDK Pipeline
 - Metrics STDOUT Exporter
 - Dbapi2 Integration
 - MySQL Integration
diff --git a/docs/index.rst b/docs/index.rst
@@ -30,17 +30,19 @@ In addition, there are several extension packages which can be installed separat
 
 The extension packages can be found in :scm_web:`ext/ directory of the repository <ext/>`.
 
-In addition, third party exporters are available:
+Extensions
+----------
 
-* `Azure Monitor <https://github.com/microsoft/opentelemetry-exporters-python/tree/master/azure_monitor>`_
+Visit `OpenTelemetry Registry <https://opentelemetry.io/registry/?s=python>`_ to find
+related projects like exporters, instrumentation libraries, tracer implementations, etc.
 
 Installing Cutting Edge Packages
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 While the project is pre-1.0, there may be significant functionality that
 has not yet been released to PyPI. In that situation, you may want to
 install the packages directly from the repo. This can be done by cloning the
-repositry and doing an `editable
+repository and doing an `editable
 install <https://pip.pypa.io/en/stable/reference/pip_install/#editable-installs>`_:
 
 .. code-block:: sh
