python no need to send additional newline
python version sends additional character at the end (i.e.,
newline). This breaks if the function asks for a user input
do not wait for cider
only wait for 1 sec for cider
Change code around cider-repl-return
Merge branch 'feature-clean' into develop

Cleans cider and python code
Add README file and ielm specific file
Add explanation to README
Move ielm-specific code to ielm file.

The lisp common code is kept in the common skeleton package.
Move cider-specific code to cider file
Move SLIME-specific code to SLIME file
Move scheme mode code to scheme mode file
Change descriptions for cider and ielm
Move python code to python file
Move shell code to shell file
Add description of modular system
Clean code in skeleton package
Fix typo in comments
Add explanation in README.md
Update in-file documentation and dependencies