Added travis yml and image in README

.travis.yml

+language: c
+sudo: required
+#dist: trusty
+before_install:
+# Yara
+  - wget https://github.com/plusvic/yara/archive/v3.4.0.tar.gz -O yara.tar.gz
+  - tar -xzvf yara.tar.gz
+# Androguard for Yara
+  - wget https://raw.githubusercontent.com/Koodous/androguard-yara/master/androguard.c -O yara-3.4.0/libyara/modules/androguard.c
+  - wget https://raw.githubusercontent.com/Koodous/androguard-yara/master/dist/yara-3.4.0/libyara/modules/module_list -O yara-3.4.0/libyara/modules/module_list
+  - wget https://raw.githubusercontent.com/Koodous/androguard-yara/master/dist/yara-3.4.0/libyara/Makefile.am -O yara-3.4.0/libyara/Makefile.am
+# libjansson
+  - wget http://www.digip.org/jansson/releases/jansson-2.7.tar.gz
+  - tar -xzvf jansson-2.7.tar.gz
+  - cd jansson-2.7
+  - ./configure
+  - make
+  - sudo make install
+  
+# Compile Yara
+  - cd ../yara-3.4.0
+  - ./bootstrap.sh
+  - ./configure --enable-cuckoo
+  - make
+  - sudo make install
+  - sudo ldconfig
+  - cd ../
+
+
+script:
+  - echo "test" > testfile
+  - echo "{}" > androguard_report.json
+  - FALLO=0
+  - for i in $(find . -type f -name "*.yara" ; find . -type f -name "*.yar"); do echo $i; yara -x androguard=androguard_report.json $i testfile; if [[ $? -ne 0 ]]; then FALLO=1; fi; done
+  - exit $FALLO
\ No newline at end of file

README.md

+[![Build Status](https://travis-ci.org/Yara-Rules/rules.svg)](https://travis-ci.org/Yara-Rules/rules)
+
 # Project
 
 This project covers the need of a group of IT Security Researches to have a single repository where different Yara signatures are compiled, classified and kept as up to date as possible, and begin as an open source community for collecting Yara rules. Our Yara ruleset is under the GNU-GPLv2 license and open to any user or organization, as long as you use it under this license.