Merge pull request #1 from russelldb/readme_typo

Fix typo of `ernl8` for `erln8` for lazy people like me can c'n'p

README.md

@@ -119,13 +119,13 @@ erln8 --clone default
 To see a list of versions you can build, run:
 
 ```
-ernl8 --buildable
+erln8 --buildable
 ```
 
 or
 
 ```
-ernl8 --buildable --repo default
+erln8 --buildable --repo default
 ```
 replacing `default` with whatever erln8-configured Git repo you want to use.
 
@@ -138,7 +138,7 @@ The following command will build Erlang R16B02 using the OTP_R16B02 tag from Git
   erln8 --build --tag OTP_R15B01 --id r15b01 --config osx_llvm
 ```
 
-You can specify alternate Git repos to build from. `erln8 --repos` lists available repos or look in ~/.erln9.d/config
+You can specify alternate Git repos to build from. `erln8 --repos` lists available repos or look in ~/.erln8.d/config
 
 ```
   erln8 --build --repo basho --tag OTP_R15B01 --id r15b01p --config osx_llvm