add doc place holders

doc/configuration.md

@@ -0,0 +1,7 @@
+## Configuration
+
+Sample config file:
+
+```erlang
+
+```

doc/faq.md

@@ -0,0 +1,3 @@
+## Why a Rebar3?
+
+Rebar was a great step forward for Erlang development but with time has proven to be fragile to change. Rebar3 builds on certain components of rebar which have benefited from years of community collaboration within a new core which is more extendable.

doc/guide.md

@@ -32,13 +32,9 @@ Now we can use rebar3 to fetch all dependencies and build both the dependencies
 ```shell
 $ rebar3 compile
 ===> Fetching gproc
-Cloning into '.tmp_dir109479658516'...
 ===> Fetching ranch
-Cloning into '.tmp_dir725384773580'...
 ===> Fetching cowboy
-Cloning into '.tmp_dir285325769000'...
 ===> Fetching cowlib
-Cloning into '.tmp_dir924054839613'...
 ===> Compiling gproc
 /home/tristan/Devel/minasan/_deps/gproc/src/gproc_dist.erl:23: Warning: behaviour gen_leader undefined
 ===> Compiling cowlib
@@ -120,7 +116,6 @@ Rebar3 has the concept of test dependencies. These dependencies will only be fet
 ```shell
 $ rebar ct
 ===> Fetching meck
-Cloning into '.tmp_dir772710363032'...
 ===> Compiling meck
 ===> Compiling minasan
 ```