Remove Makefile

mdbook supports testing now, so there's no need.

.travis.yml

@@ -8,7 +8,8 @@ rust:
 before_script:
   - cargo install mdbook
 script:
-  - PATH=$PATH:/home/travis/.cargo/bin make all
+  - PATH=$PATH:/home/travis/.cargo/bin mdbook test
+  - PATH=$PATH:/home/travis/.cargo/bin mdbook build
 after_success:
   - test $TRAVIS_PULL_REQUEST == "false" && test $TRAVIS_BRANCH == "master" && bash deploy.sh
 env:

Makefile

@@ -1,7 +0,0 @@
-default:
-	mdbook build
-
-test:
-	find . -name "*.md" | xargs -I{} rustdoc --test {}
-
-all: default test

README.md

@@ -26,7 +26,7 @@ $ cargo install mdbook
 To build the book, type:
 
 ```bash
-$ make
+$ mdbook build
 ```
 
 The output will be in the `book` subdirectory. To check it out, open it in
@@ -39,13 +39,7 @@ $ firefox book/index.html
 To run the tests:
 
 ```bash
-$ make test
-```
-
-To do both:
-
-```bash
-$ make all
+$ mdbook test
 ```
 
 ## Contributing