version bump script to 4.0

modified README.md,
bumped version of script to 4.0

Author: kernelOfTruth

README.md

@@ -21,3 +21,8 @@ were required to allow this.
 The source code was also run through a formatter to correct the
 heavy mix of tabs and spaces. I have no idea how it even ran with
 such inconsistent indentation."
+
+In version 4.0 the following was fixed: the involuntary volume raise issue,
+volume detection and implementation of --color=never for grep.
+
+Thanks again to kabili207 :)

bin/pulseaudio-equalizer

@@ -21,7 +21,7 @@ PA_CURRENT_PRESET=""
 PRESET_DIR1=$HOME/.config/pulse/presets
 PRESET_DIR2=/usr/share/pulseaudio-equalizer/presets
 SCRIPT_NAME=pulseaudio-equalizer
-SCRIPT_VERSION="3.0 (06.12.2016)"
+SCRIPT_VERSION="4.0 (29.01.2017)"
 CONFIG_NAME=$HOME/.config/pulse/equalizerrc
 LOG_NAME=$HOME/pulseaudio-equalizer.log