Add brief example descriptions to README (#120)

* Added brief example descriptions to README
* Update config script
* Update sym.py API usage
* Remove individual example descriptions
* fix mcore init
* consistently document examples
* make basic_sym runnable
* More path fixes
* cleanup; update api

examples/script/run_hook.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+import sys
+from manticore import Manticore
+
+'''
+Demonstrates the ability to set a basic hook on a specific program counter and
+the ability to read from memory.
+'''
+
+if __name__ == '__main__':
+    path = sys.argv[1]
+    pc = int(sys.argv[2], 0)
+
+    m = Manticore(path)
+
+    # Trigger an event when PC reaches a certain value
+    @m.hook(pc)
+    def reached_goal(state):
+        cpu = state.cpu
+
+        assert cpu.PC == pc
+
+        instruction = cpu.read_int(cpu.PC)
+        print "Execution goal reached."
+        print "Instruction bytes: {:08x}".format(instruction)
+
+    # Start path exploration. m.run() returns when Manticore
+    # finishes
+    m.run()
+