Dont fail on file paths with spaces

[larsgrefer]

fix #17

Tested on Ubuntu 14.04.4:

Apache Maven 3.0.5
Maven home: /usr/share/maven
Java version: 1.8.0_72, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-8-oracle/jre
Default locale: de_DE, platform encoding: UTF-8
OS name: "linux", version: "3.13.0-66-generic", arch: "amd64", family: "unix"

and Mac OS X 10.11.3:

Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T17:41:47+01:00)
Maven home: /usr/local/Cellar/maven/3.3.9/libexec
Java version: 1.8.0_25, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/jre
Default locale: de_DE, platform encoding: UTF-8
OS name: "mac os x", version: "10.11.3", arch: "x86_64", family: "mac"

[tristanlins]

Looks good, merged into develop branch.