update the ReadMe's for subgraph (#124)

Author: technophile-04

README.md

@@ -152,8 +152,8 @@ Other folders
 
 ```bash
 # for subgraph checkout README.md in following directories
-packages/advanced/subgraph/
-packages/advanced/services/
+packages/subgraph/
+packages/services/
 ```
 
 ## Guides

packages/services/README.md

@@ -1,6 +1,6 @@
 # Graph-Node
 
-1.  Make sure you are in `packages/advanced/services` direcotry in your terminal before running the following commands and docker is running.
+1.  Make sure you are in `packages/services` directory in your terminal before running the following commands and **`docker`** is also running.
 
       ```bash
       cd graph-node && docker-compose up

packages/subgraph/README.md

@@ -3,11 +3,11 @@
 
 1. Make sure your local chain is running first and you have ran `yarn deploy`.
 
-2. Make sure you are running `graph-node` using docker,  for instructions checkout `README.md` in `packages/advanced/services` directory.
+2. Make sure you are running `graph-node` using docker, for instructions checkout `README.md` in `packages/services` directory.
 
-3. replace address of `YourContract` in `subgraph.yaml` file  with deployed address.
+3. create a `subgraph.yaml` file in `packages/subgraph` directory, refer to `packages/subgraph/src/subgraph.template.yaml` and change `{{localhost_YourContractAddress}}` to deployed `YourContract` address
 
-4. Make sure you are at `packages/advanced/subgraph` in you terminal before running the below commands.
+4. Make sure you are at `packages/subgraph` in you terminal before running the below commands.
 
 4. Create your <b>local subgraph</b> by running