Fix ci following:

    1. Unify the dependency installation process in setup.sh.
    2. Change the version of package scipy from 0.13.0b1 to 0.13.1

.travis/unittest.sh

@@ -8,8 +8,8 @@ abort(){
 
 unittest(){
     cd $1 > /dev/null
-    if [ -f "requirements.txt" ]; then
-        pip install -r requirements.txt
+    if [ -f "setup.sh" ]; then
+        sh setup.sh
     fi
     if [ $? != 0 ]; then
         exit 1

deep_speech_2/requirements.txt

 SoundFile==0.9.0.post1
 wget==3.2
-scikits.samplerate==0.3.3
-scipy==0.13.0b1
+scipy==0.13.1

deep_speech_2/setup.sh

+#!/bin/bash
+
+# install python dependencies
+if [ -f 'requirements.txt' ]; then
+    pip install -r requirements.txt
+fi
+
+if [ $? != 0 ]; then
+    exit 1
+fi
+
+# install scikits.samplerate
+curl -O "http://www.mega-nerd.com/SRC/libsamplerate-0.1.9.tar.gz"
+if [ $? != 0 ]; then
+    echo "Download libsamplerate-0.1.9.tar.gz failed !!!"
+    exit 1
+fi
+tar -xvf libsamplerate-0.1.9.tar.gz
+cd libsamplerate-0.1.9
+./configure && make && make install
+cd -
+rm -rf libsamplerate-0.1.9
+rm libsamplerate-0.1.9.tar.gz
+pip install scikits.samplerate==0.3.3
+if [ $? != 0 ]; then
+    echo "Install sckikits.samplerate failed !!!"
+    exit 1
+fi