Merge pull request #659 from Mkaysi/install

Update INSTALL.md && .mailmap && restore INSTALL symlink

.mailmap

@@ -4,6 +4,7 @@ Mikaela Suomalainen <mikaela.suomalainen@outlook.com> Mikaela Suomalainen <mkays
 Mikaela Suomalainen <mikaela.suomalainen@outlook.com> Mika Suomalainen <mkaysi@outlook.com>
 Mikaela Suomalainen <mikaela.suomalainen@outlook.com> Mika Suomalainen <mkaysi@users.sourceforge.net>
 Mikaela Suomalainen <mikaela.suomalainen@outlook.com> Mika Suomalainen <s.mika95@gmail.com>
+<mikaela.suomalainen@outlook.com> <Mkaysi@users.noreply.github.com>
 <progval@progval.net> <progval@gmail.com>
 <progval@progval.net> <progval+github@progval.net>
 <nyuszika7h@outlook.com> <nyuszika7h@cadoth.net>

INSTALL

@@ -0,0 +1 @@
+INSTALL.md

INSTALL.md

@@ -25,9 +25,9 @@ To install them, run
 
 ```pip install -r requirements.txt``` 
 
-or if you don't have or want to use root, 
+or if you don't have or don't want to use root, 
 
-````pip --install-option=--prefix=$HOME/.local install -r requirements.txt```
+````pip install -r requirements.txt --install-option=--prefix=$HOME/.local```
 
 For more information and help on how to use Supybot, checkout
 the documents under [docs/], especially [GETTING_STARTED] and
@@ -45,6 +45,8 @@ from there.
 
 # UNIX/Linux/BSD
 
+If you use [Debian or Ubuntu, click here](INSTALL.md#Debian)
+
 If you're installing Python using your distributor's packages, you may
 need a python-dev or python3-dev package installed, too.  If you don't have
 a '/usr/lib/python2.x/distutils' directory or 
@@ -52,6 +54,9 @@ a '/usr/lib/python2.x/distutils' directory or
 '/usr/lib/python3.x/distutils' or '/usr/lib/python3.x/config/Makefile' (assuming '/usr/lib/python2.x' or '/usr/lib/python3.x' is where your Python 
 libs are installed), then you will need a python-dev or python3-dev package.
 
+
+## git
+
 First start by git cloning Limnoria and moving to the cloned repository.
 
 ```
@@ -61,7 +66,7 @@ cd Limnoria
 
 The rest depends on do you have root access and do you want to perform global or local install.
 
-## Global install
+### Global install
 
 Run
 
@@ -81,7 +86,7 @@ the script to run an actual bot; the latter, 'supybot-wizard', is an
 in-depth wizard that provides a nice user interface for creating a
 registry file for your bot.
 
-## Local install
+### Local install
 
 Run
 
@@ -109,7 +114,30 @@ echo 'PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc
 source ~/.bashrc
 ```
 
-# Upgrading
+## Debian
+
+For Debian and other distributions based on it (Ubuntu etc.), there are 
+packages. You can install them with
+
+```
+wget http://builds.progval.net/limnoria/limnoria-master-HEAD.deb
+sudo dpkg -i limnoria-master-HEAD.deb
+```
+
+## Pip
+
+To install with pip run
+
+```
+sudo pip install limnoria
+```
+
+If you wish to use Python 3 or 2 instead of default of your distribution 
+run `pipX` where X is either 2 or 3 instead of `pip`.
+
+### Upgrading
+
+#### git
 
 To upgrade, return to the cloned Limnoria repository and run:
 
@@ -121,6 +149,23 @@ and then install Limnoria normally. "python setup.py install" doesn't affect con
 
 If you don't have the cloned Limnoria repository, clone it again using the installation instructions.
 
+### Debian
+
+Simply do the same as before:
+
+```
+wget http://builds.progval.net/limnoria/limnoria-master-HEAD.deb
+sudo dpkg -i limnoria-master-HEAD.deb
+```
+
+### Pip
+
+To update with pip, add `--upgrade` to the end of the command:
+
+```
+pip install limnoria --upgrade
+```
+
 ## Upgrading to Python 3
 
 Upgrading Python3 happens the same way, but if you want to move from 2 to 3 
@@ -134,7 +179,7 @@ rm /usr/local/bin/supybot*
 rm ~/.local/bin/supybot*
 ```
 
-# Windows
+## Windows
 
 **Note**: If you are using an IPV6 connection, you will not be able
 to run Supybot under Windows (unless Python has fixed things).  Current