Add version for Cargo.toml.

Author: jmjoy

phper/Cargo.toml

@@ -12,5 +12,5 @@ keywords = ["php", "binding", "extension"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-phper-sys = { path = "../phper-sys" }
-phper-macros = { path = "../phper-macros" }
+phper-sys = { version = "0.1", path = "../phper-sys" }
+phper-macros = { version = "0.1", path = "../phper-macros" }