Re-order instructions in README (#107)

README.md

@@ -38,21 +38,7 @@ To build the slides, run the following command:
 make slides
 ```
 
-## Back-end
-
-### Building the machine image
-
-```sh
-cartesi build
-```
-
-### Running the Cartesi Node
-
-```
-cartesi run
-```
-
-## Building bounties
+## Building example bounties
 
 Before testing, you need to compile bounties binaries.
 
@@ -78,6 +64,20 @@ Along with following exploits:
 ./tests/bounties/sqlite-bounty/exploit-sqlite-3.32.2.sql
 ```
 
+## Back-end
+
+### Building the machine image
+
+```sh
+cartesi build
+```
+
+### Running the Cartesi Node
+
+```
+cartesi run
+```
+
 ## Tests
 
 Before running tests, make sure you built the image and bounties, you can build them with `make all`.