Enable caching on Travis (#59)

.travis.yml

@@ -1,6 +1,13 @@
 sudo: required
 dist: trusty
 language: python
+cache:
+    - pip
+    - directories:
+        - /home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/
+        - /home/travis/virtualenv/python2.7.9/bin/
+        - capstone
+        - unicorn
 install:
   - sudo apt-get -y install gdb
   - lsb_release -a

setup.sh

@@ -1,4 +1,5 @@
-#!/bin/bash -ex
+#!/bin/bash
+set -ex
 
 if uname | grep -i Linux &>/dev/null; then
     sudo apt-get update
@@ -26,7 +27,6 @@ export UNICORN_QEMU_FLAGS="--python=$(which python2)"
 # Install both Unicorn and Capstone
 for directory in capstone unicorn; do
     pushd $directory
-    git clean -xdf
     sudo ./make.sh install
     cd bindings/python
     sudo ${PYTHON} -m pip install --target ${SITE_PACKAGES} .