Fix typos and the URL to the Requests module on PyPI (#94)

Author: stew-r

README.rst

@@ -26,7 +26,7 @@ Installation & basic usage
         pip install opencensus
         pipenv install opencensus
 
-2. Initialize a tracer for application:
+2. Initialize a tracer for your application:
 
     .. code:: python
 
@@ -131,7 +131,7 @@ Propagators
 ~~~~~~~~~~~
 
 You can specify the propagator type for serializing and deserializing the
-``SpanContex`` and its headers. There are currently two built in propagators:
+``SpanContext`` and its headers. There are currently two built in propagators:
 ``GoogleCloudFormatPropagator`` and ``TextFormatPropagator``.
 
 This example shows how to use the ``GoogleCloudFormatPropagator``:
@@ -182,7 +182,7 @@ For Django, you can configure the blacklist in the ``OPENCENSUS_PARAMS`` in ``se
 Framework Integration
 ---------------------
 
-Opencensus supports integration with popular web frameworks including
+Census supports integration with popular web frameworks including
 Django, Flask, and Webapp2. When the application receives a HTTP request,
 the tracer will automatically generate a span context using the trace
 information extracted from the request headers, and propagated to the
@@ -227,7 +227,7 @@ And add this line to the ``INSTALLED_APPS`` section:
         'opencensus.trace.ext.django',
     ]
 
-You can configure the the sampler, exporter, propagator using the ``OPENCENSUS_TRACE`` setting in
+You can configure the sampler, exporter, propagator using the ``OPENCENSUS_TRACE`` setting in
 ``settings.py``:
 
 .. code:: python
@@ -306,22 +306,24 @@ to ``trace_integrations`` using ``'postgresql'``.
 SQLAlchemy
 ~~~~~~~~~~
 
-You can trace usage of `sqlalchemy package`_, regardless of the underlying database, by
-specifying ``'sqlalchemy'`` to ``trace_integrations``.
+You can trace usage of the `sqlalchemy package`_, regardless of the underlying
+database, by specifying ``'sqlalchemy'`` to ``trace_integrations``.
 
 .. _SQLAlchemy package: https://pypi.org/project/SQLAlchemy
 
-.. note:: If you enable tracing of SQLAlchemy and the underlying database
+.. note:: If you enable tracing of SQLAlchemy as well as the underlying database
     driver, you will get duplicate spans. Instead, just trace SQLAlchemy.
 
 Requests
 ~~~~~~~~
 
-Census can trace HTTP requests made with the `Requests`_ library. The request URL,
+Census can trace HTTP requests made with the `Requests package`_. The request URL,
 method, and status will be collected.
 
 You can enable Requests integration by specifying ``'requests'`` to ``trace_integrations``.
 
+.. _Requests package: https://pypi.python.org/pypi/requests
+
 
 Contributing
 ------------