Add make test_lang troubleshooting sections

Issue #152
Fix a typo
Merge pull request #158 from vmbrasseur/master

Closes #152
Add path to make install

Else root is starsha ignorant (not in its path). Can't have that.
Merge pull request #159 from vmbrasseur/master

Add path to make install
Correct the `make install` line

Issue #160
Merge pull request #161 from vmbrasseur/master

Correct the `make install` line
Add Hello World section

Mostly just pointing toward the in-progress hello_world.md doc.

Issue #162
stig_dm doc: In progress

Barely even bare bones at this point. Saving for posterity. Plus:
commit early, commit often.
Add stig_dm command/section

Issue #132

Just a first draft.
Start of hello_world.md

#162
Merge pull request #165 from vmbrasseur/master

Many doc changes
Add to Troubleshooting TOC

Issue #153
Merge pull request #166 from vmbrasseur/master

Add to Troubleshooting TOC
Add a README/TOC to /docs

Issue #128
Correct license link

It's just LICENSE, not LICENSE.md

#128
Merge pull request #167 from vmbrasseur/master

Closes #128
Minor whitespace change
Merge pull request #168 from vmbrasseur/master

Minor whitespace change
Define minimum number of cores

Issue #163