Made more clear that steem and beem cannot be install at the same time.

.travis.yml

@@ -27,6 +27,12 @@ matrix:
     #  python: 3.7
     #  env:
     #    - TOXENV=py37
+    - os: osx
+      osx_image: xcode7.3
+      language: objective-c
+      env:
+        - TRAVIS_PYTHON_VERSION=3.5
+        - TOXENV=py35
     - os: osx
       osx_image: xcode9.2
       language: objective-c

README.rst

@@ -27,6 +27,9 @@ The library name is derived from a beam maschine, similar to the analogy between
 
 Installation
 ============
+Warning: install beem will install pycrytodome which is not compatible to pycryto which is need for python-steem.
+At the moment, either beem or steem can be install at one maschine!
+
 For Debian and Ubuntu, please ensure that the following packages are installed:
         
 .. code:: bash

docs/installation.rst

-************
 Installation
-************
+============
+Warning: install beem will install pycrytodome which is not compatible to pycryto which is need for python-steem.
+At the moment, either beem or steem can be install at one maschine!
 
-Installation
-############
+For Debian and Ubuntu, please ensure that the following packages are installed:
+        
+.. code:: bash
 
-Install with `pip3`:
+    sudo apt-get install build-essential libssl-dev python-dev
 
-::
+For Fedora and RHEL-derivatives, please ensure that the following packages are installed:
 
-    $ sudo apt-get install libffi-dev libssl-dev python-dev
-    $ pip3 install beem
+.. code:: bash
 
-or the with `pip`:
+    sudo yum install gcc openssl-devel python-devel
 
-::
+For OSX, please do the following::
+
+    brew install openssl
+    export CFLAGS="-I$(brew --prefix openssl)/include $CFLAGS"
+    export LDFLAGS="-L$(brew --prefix openssl)/lib $LDFLAGS"
+
+For Termux on Android, please install the following packages:
+
+.. code:: bash
+
+    pkg install clang openssl-dev python-dev
+    
+Install beem by pip::
+
+    pip install -U beem
+    
+You can install beem from this repository if you want the latest
+but possibly non-compiling version::
+
+    git clone https://github.com/holgern/beem.git
+    cd beem
+    python setup.py build
+    
+    python setup.py install --user
+
+Run tests after install::
 
-    $ pip install -U beem
+    pytest
 
 Manual installation:
+--------------------
 
 ::
 
@@ -28,7 +55,7 @@ Manual installation:
     $ python setup.py install --user
 
 Upgrade
-#######
+-------
 
 ::