fix read PTI error (#384)

* fixing dcline for v0.7

* forcing :String return from read("PTIFILE")

Author: claytonpbarrows

src/io/pti.jl

@@ -568,7 +568,7 @@ to the main PTI parser, returning a `Dict` of all the data parsed into the
 proper types.
 """
 function parse_pti(filename::String)::Dict
-    data_string = read(open(filename))
+    data_string = read(open(filename),String)
     pti_data = parse_pti_data(data_string, get_pti_sections())
     pti_data["CASE IDENTIFICATION"][1]["NAME"] = match(r"[\/\\]*(?:.*[\/\\])*(.*)\.raw", lowercase(filename)).captures[1]