Add (failing for now) integration test as suggested by @Marcoleni on issue #116

Author: brainstorm

.gitignore

@@ -2,4 +2,3 @@
 [._]*.sw[a-p]
 Cargo.lock
 target
-tests/

tests/bad_svd.rs

@@ -4,7 +4,7 @@ use svd_parser as svd;
 fn arm_sample_faulty() {
     let xml = include_str!(concat!(
         env!("CARGO_MANIFEST_DIR"),
-        "/tests/ARM_Sample_faulty.svd"
+        "/tests/data/ARM_Sample_faulty.svd"
     ));
     if let Err(e) = svd::parse(xml) {
         for e in e.chain() {
@@ -13,4 +13,4 @@ fn arm_sample_faulty() {
     } else {
         panic!()
     }
-}
+}