add 'coverage' to generate testing coverage report

.gitignore

@@ -13,3 +13,5 @@ dist
 laser*
 lol*
 .idea*
+htmlcov/
+.coverage

README.md

@@ -41,6 +41,23 @@ $ pip3 install mythril
 
 If you plan to analyze Solidity code you'll also need the [native version of solc](http://solidity.readthedocs.io/en/v0.4.21/installing-solidity.html#binary-packages). Solcjs is not supported.
 
+## Running tests
+
+```bash
+pip3 install -r requirements.txt
+./all_tests.sh
+```
+
+It will run all the tests.
+
+### Generating test coverage report 
+
+```bash
+./coverage_report.sh
+```
+
+It will generate a coverage testing report `htmlcov/index.html` in html format, which will be automatically opened in browser.
+
 ## Security analysis
 
 Run `myth -x` with one of the input options described below to run the analysis. This will run the Python modules in the [/analysis/modules](https://github.com/b-mueller/mythril/tree/master/mythril/analysis/modules) directory. 

coverage_report.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+coverage run --source=mythril -m unittest discover -p "*_test.py"
+coverage html
+open htmlcov/index.html

requirements.txt

@@ -13,3 +13,4 @@ eth-keyfile>=0.5.1
 eth-keys>=0.2.0b3
 eth-rlp>=0.1.0
 eth-tester>=0.1.0b21
+coverage

setup.py

@@ -301,7 +301,8 @@ setup(
         'eth-keyfile>=0.5.1',
         'eth-keys>=0.2.0b3',
         'eth-rlp>=0.1.0',
-        'eth-tester>=0.1.0b21'
+        'eth-tester>=0.1.0b21',
+        'coverage'
     ],
 
     python_requires='>=3.5',