Update README.md.

README.md

@@ -5,7 +5,7 @@
 
 vprof is a Python package providing rich and interactive visualizations for
 various Python program characteristics such as running time and memory usage.
-It supports Python 2.7, Python 3.4, Python 3.5 and distributed under BSD license.
+It supports Python 2.7, Python 3.4+ and distributed under BSD license.
 
 The project is in active development and some of its features might not work as
 expected.
@@ -16,18 +16,19 @@ expected.
 ## Contributing
 All contributions are highly encouraged! You can add new features,
 report and fix existing bugs and write docs and tutorials.
-Feel free to open issue or send pull request!
+Feel free to open an issue or send a pull request!
 
 ## Prerequisites
-The required dependencies to build ```vprof``` from source code:
+Dependencies to build ```vprof``` from source code:
  * Python 2.7, Python 3.4 or Python 3.5
  * `pip`
  * `npm` >= 3.3.12
 
 `npm` is required to build `vprof` from sources only.
 
 ## Dependencies
-All Python and `npm` module dependencies are listed in `package.json` and `requirements.txt`.
+All Python and `npm` module dependencies are listed in `package.json` and
+`requirements.txt`.
 
 ## Installation
 `vprof` can be installed from PyPI
@@ -61,17 +62,19 @@ Shows CPU flame graph for `<src>`.
 
 * `p` - profiler
 
-Runs Python profiler on `<src>` and displays results.
+Runs built-in Python profiler on `<src>` and displays results.
 
 * `m` - memory graph
 
-Shows objects that are tracked by CPython GC and left in memory after code execution. Also shows process memory usage after execution of each line of `<src>`.
+Shows objects that are tracked by CPython GC and left in memory after code
+execution. Also shows process memory usage after execution of each line of `<src>`.
 
 * `h` - code heatmap
 
-Displays all executed code of `<src>` with line execution count.
+Displays all executed code of `<src>` with line run times and execution counts.
 
-`<src>` can be Python source file (e.g. `testscript.py`) or path to package (e.g. `myproject/test_package`).
+`<src>` can be Python source file (e.g. `testscript.py`) or path to package
+(e.g. `myproject/test_package`).
 
 To run scripts with arguments use double quotes
 
@@ -105,9 +108,12 @@ def foo(arg1, arg2):
 runner.run(foo, 'cmhp', args=(arg1, arg2), host='localhost', port=8000)
 ```
 
-where `cmhp` is profiling mode, `host` and `port` are hostname and port of `vprof` server launched in remote mode. Obtained stats will be rendered in new tab of default web browser, opened by `vprof -r` command.
+where `cmhp` is profiling mode, `host` and `port` are hostname and port of
+`vprof` server launched in remote mode. Obtained stats will be rendered in new
+tab of default web browser, opened by `vprof -r` command.
 
-`vprof` is able to save profile stats to file and render visualizations from previously saved file.
+`vprof` can save profile stats to file and render visualizations from
+previously saved file.
 
 ```sh
 vprof -c cmh src.py --output-file profile.json
@@ -128,8 +134,6 @@ Also you can check `examples` directory for more profiling examples.
 
 ## Testing
 
-Just run:
-
 ```sh
 python setup.py test && python setup.py e2e_test
 ```