install default-jdk, update pip by default, install numpy before javabridge

INSTALL.sh

@@ -9,9 +9,12 @@ if [ "$EUID" -ne 0 ]
 fi
 
 sudo apt-get update
-sudo apt-get -y install libfreetype6-dev tk tk-dev python-pip default-jre weka weka-doc
+sudo apt-get -y install libfreetype6-dev tk tk-dev python-pip default-jre default-jdk weka weka-doc python-tk
 
 echo "[PYNOVISAO INSTALLER] Installing libraries..."
+pip install --upgrade pip
+# Numpy must be installed before installing javabridge
+pip install numpy
 pip install -r requeriments.txt
 
 echo