Tidy a few other "Rtree" -> "rtree" instances

Author: mwtoews

README.md

@@ -1,7 +1,7 @@
 # Rtree: Spatial indexing for Python
 
 ![Build](https://github.com/Toblerity/rtree/workflows/Build/badge.svg)
-[![PyPI version](https://badge.fury.io/py/Rtree.svg)](https://badge.fury.io/py/Rtree)
+[![PyPI version](https://badge.fury.io/py/rtree.svg)](https://badge.fury.io/py/rtree)
 
 
 Rtree is a [ctypes](https://docs.python.org/3/library/ctypes.html) Python wrapper of [libspatialindex](https://libspatialindex.org/) that provides a

docs/source/install.rst

@@ -22,7 +22,7 @@ ensure that applications can find it at startup time.
 
 Rtree can be easily installed via pip::
 
-  $ pip install Rtree
+  $ pip install rtree
 
 or by running in a local source directory::
 
@@ -39,8 +39,8 @@ The Windows DLLs of `libspatialindex`_ are pre-compiled in
 windows installers that are available from `PyPI`_.  Installation on Windows
 is as easy as::
 
-  pip install Rtree
+  pip install rtree
 
 
-.. _`PyPI`: https://pypi.org/project/Rtree/
+.. _`PyPI`: https://pypi.org/project/rtree/
 .. _`libspatialindex`: https://libspatialindex.org

setup.py

@@ -57,7 +57,7 @@ def finalize_options(self) -> None:
 
 # See pyproject.toml for other project metadata
 setup(
-    name="Rtree",
+    name="rtree",
     distclass=BinaryDistribution,
     cmdclass={"bdist_wheel": bdist_wheel, "install": InstallPlatlib},
 )