Updated TravisCI (asciidoc)

TravisCI.asciidoc

@@ -1,6 +1,7 @@
 ## Building Nim projects on Travis CI
 
 Building your code on Travis CI is useful to check regressions against the master and devel branches of Nim.
+Same for your code documentation.
 
 [source,yaml]
 ----
@@ -43,7 +44,10 @@ install:
 before_script:
     - export PATH="nim-$BRANCH/bin${PATH:+:$PATH}"
 script:
-    - nim c --cc:$CC --verbosity:0 -r my_test_file.nim  # Replace this
+    # Replace uppercase strings!
+    - nim c --cc:$CC --verbosity:0 -r MYFILE.nim
+    # Optional: build docs. 
+    - nim doc --docSeeSrcUrl:https://github.com/AUTHOR/MYPROJECT/blob/master --project MYFILE.nim
 cache:
   directories:
     - nim-master