Merge pull request #11 from hobofan/patch-1

docs(readme): fix dead link to metering explanation

README.md

@@ -9,7 +9,7 @@
 Injects metering into webassembly binaries. The metering counts computation
 time for a given program in units of `gas`. The metered wasm binary expects an 
 import that functions as the gas counter. This works for binary version 0xD.
-For a more detailed description of how this works see [metering.md](https://github.com/ewasm/design/blob/metering/metering.md)
+For a more detailed description of how this works see [metering.md](https://github.com/ewasm/design/blob/master/metering.md)
 
 # INSTALL
 `npm install wasm-metering`