fix travis (#341)

add hook::lexwrap to testdeps (#341)
also use #!/usr/bin/env perl instead of #!/usr/bin/perl


can't see a related change to perl5.30 that could cause this however

META.json

@@ -4,7 +4,7 @@
       "Eric A. Miller <emiller@cpan.org>"
    ],
    "dynamic_config" : 1,
-   "generated_by" : "Module::Build version 0.4224",
+   "generated_by" : "Module::Build version 0.4229",
    "license" : [
       "bsd"
    ],
@@ -38,6 +38,7 @@
             "Class::Inspector" : "0",
             "File::Find" : "0",
             "File::Slurper" : "0",
+            "Hook::LexWrap" : "0",
             "Module::Find" : "0",
             "NetSNMP::default_store" : "0",
             "Path::Class" : "0",