Param (#282)

* sync with MontFerret/ferret

* fix --param handling

When params is converted to map it uses strings.Split,
which slices a string into all substrings separated by :.

README.md

@@ -89,7 +89,6 @@ You can download latest binaries from [here](https://github.com/MontFerret/ferre
 * Chrome or Docker
 
 #### Development
-* GoDep
 * GNU Make
 * ANTLR4 >=4.7.1
 
@@ -540,5 +539,5 @@ LET c = COOKIES_GET(doc, "baz")
 
 FOR cookie IN doc.cookies
     RETURN cookie.name
-
-```
+	
+```

main.go

@@ -29,7 +29,7 @@ func (p *Params) ToMap() (map[string]interface{}, error) {
 	res := make(map[string]interface{})
 
 	for _, entry := range *p {
-		pair := strings.Split(entry, ":")
+		pair := strings.SplitN(entry, ":", 2)
 
 		if len(pair) < 2 {
 			return nil, core.Error(core.ErrInvalidArgument, entry)