adding testx files

examples/pkgIndex.tcl

@@ -0,0 +1,3 @@
+if {![package vsatisfies [package provide Tcl] 8.6]} {return}
+
+package ifneeded testx  0.0.1 [list source [file join $dir testx.tcl]]

examples/testx.tcl

@@ -0,0 +1,15 @@
+package provide testx 0.0.1
+
+namespace eval testx { }
+
+proc testx::hello {name} {
+    puts "Hello ${name}!"
+}   
+
+proc testx::main {{argv {}}} {
+    if {[llength $argv] != 1} {
+        puts "Usage: tclmain -m testx NAME"
+    } else {
+        testx::hello [lindex $argv 0]
+    }   
+}