update documentation

README.md

@@ -21,7 +21,7 @@ We provide binary wheels for Linux and Windows 64 for all actively
 maintained Python versions.
 
 For other versions, a source wheel is provided. Make sure to install all
-external dependencies first. On Deian/Ubuntu-like systems, the following
+external dependencies first. On Debian/Ubuntu-like systems, the following
 command installs all required packages:
 
     sudo apt-get install build-essential cmake libboost-dev \
@@ -42,6 +42,7 @@ pyosmium has the following dependencies:
  * [libz](https://www.zlib.net/)
  * [libbz2](https://www.sourceware.org/bzip2/)
  * [Boost](https://www.boost.org/) variant and iterator >= 1.41
+ * [Python Requests](https://docs.python-requests.org/en/master/)
  * Python setuptools
  * a recent C++ compiler (Clang 3.4+, GCC 4.8+)
 

README.rst

@@ -24,7 +24,7 @@ development packages for these libraries. On Debian/Ubuntu do::
                        libexpat1-dev zlib1g-dev libbz2-dev
 
 
-Python >= 2.7 is supported but a version >= 3.3 is strongly recommended.
+Python >= 3.4 is supported.
 
 Documentation
 =============