Corrected dependencies to build the packages

README.md

@@ -22,7 +22,7 @@ This method requires root access and is only available for Ubuntu 14.04 at this
 
 This method requires root access and was only tested on Ubuntu 14.04, 15.10 and 16.04.
 
-  1. Install dependencies: `sudo apt-get install python27 python-dev-all build-essential python-notify gir1.2-notify-0.7 gir1.2-appindicator3-0.1 gir1.2-rsvg-2.0`
+  1. Install dependencies: `sudo apt-get install python-27 python-all-dev build-essential python-notify gir1.2-notify-0.7 gir1.2-appindicator3-0.1 gir1.2-rsvg-2.0`
   2. Clone the repository: `git clone https://github.com/gentakojima/emojione-picker-ubuntu`
   3. Build the package: `cd emojione-picker-ubuntu; debuild` (*Signing the package might fail at this point, but it's not a big deal*)
   4. Install it! `sudo dpkg -i ../emojione-picker*.deb`